Question

If the ratios formned using the numbers 6, $x$, 25 , 75 in the same order are in proportion, then '$x$' is ___

• A. 5
• B. 18
• C. 50
• D. 24

Answer 1

The correct option is B

18

Given, 6 : $x$ :: 25 : 75 are in proportion

When the numbers are in proportion , product of means = product of extremes

Hence $x\times 25$ = $6\times 75$

$\Rightarrow x=\frac{6\times 75}{25}$

$\Rightarrow x=18$