Question

x : 19 :: 142 : 71 with process​

Answer 1

Answer:

X=38 is the correct answer according to me

Answer 2

Answer:

Required value of x is 38.

So,38 : 19 :: 142 : 71

Step-by-step explanation:

Given,x : 19 :: 142 : 71

This is a problem of proportion.

:: is sign of proportion.

We know,

If $z:y::a:b$ then $\frac{z}{y} = \frac{a}{b}$

By one examples,we can understand this concept.

If $p:2::2:4$

then by rule,

$\frac{p}{2} = \frac{2}{4}$

By cross multiplication,

$4p = 2 \times 2 \\ 4p = 4 \\ p = \frac{4}{4} \\ p = 1$

Here given,

x : 19 :: 142 : 71

Then by proportion rule,

$\frac{x}{19} = \frac{142}{71}$

By cross multiplication,

$71 \times x = 19 \times 142 \\ x = \frac{19 \times 172}{71} \\ x = 19 \times 2 \\ x = 38$

So, required value of x is 38.

Know more about Proportional:

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