If the four numbers, 39, 117, 17, and y are in proportion, then find the value of y.
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2 i.e. 51.
Concept:-
When four numbers are in proportion then,
a : b = c : d
a/b = c/d
Calculations:
Here, a = 39, b = 117, c = 17, and d = y
⇒ 39/117 = 17/y
⇒ y = (117 × 17)/39
⇒ y = 51