Question

If 12, 21, 72, 126 are in proportion, then:
1 point
12 × 21 = 72 × 126
12 × 72 = 21 × 126
12 × 126 = 21 × 72
none of these​

Answer 1

Answer:

12×126=21×72

Step-by-step explanation:

Answer 2

Given:

12, 21, 72, 126 are in proportion

To find:

The correct option

Solution:

We can find the right option by following the given process-

We know that when the given terms are in proportion, the product of means is equal to the product of extremes.

The given numbers are 12, 21, 72, and 126.

The terms at mean positions are 21 and 72.

The terms at extreme positions are 12 and 126.

As per the rule stated above, we get

Product of means=Product of extremes

Product of 21 and 72=Product of 12 and 126

21×72=12×126

Therefore, 12 × 126 = 21 × 72 is the correct option.