Question

the third proportional between 7,13 and 156 is​

Answer 1

Answer:

84

Step-by-step explanation:

let third proportional be x

7 13 x 156

product of means = product of extremes

13 × x = 7 × 156

x = 7 × 12

x = 84

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Answer 2

SOLUTION

TO DETERMINE

The third proportional between 7 , 13 and 156

EVALUATION

Let x be the third proportional between 7 , 13 and 156

Then we have

7 : 13 = x : 156

$\displaystyle \sf{ \implies \frac{7}{13} = \frac{x}{156} }$

$\displaystyle \sf{ \implies 13x = 7 \times 156}$

$\displaystyle \sf{ \implies x = \frac{7 \times 156}{13} }$

$\displaystyle \sf{ \implies x = 84}$

FINAL ANSWER

The third proportional between 7 , 13 and 156 is 84

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