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Q: If four numbers 39, 117, 17 and y are in proportion, then find the value of y.
  • A. 49
  • B. 51
  • C. 85
  • D. 57
Correct Answer: Option B - According to the question, 39 : 117 : : 17 : y 39 × y = 117 × 17 y = 51
B. According to the question, 39 : 117 : : 17 : y 39 × y = 117 × 17 y = 51

Explanations:

According to the question, 39 : 117 : : 17 : y 39 × y = 117 × 17 y = 51