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Finding the Fourth Proportional to 117,331.32, 161,915.72 and 63,616.17

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Solution

The fourth proportional to 117,331.32, 161,915.72 and 63,616.17 is: 87,789.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,331.32 : 161,915.72 = 63,616.17 : x
  2. Step 2: Convert to fraction form
    117,331.32/161,915.72 = 63,616.17/x
  3. Step 3: Cross multiply
    117,331.32x = 161,915.72 × 63,616.17
  4. Step 4: Simplify right side
    117,331.32x = 10,300,457,651.11
  5. Step 5: Solve for x
    x = 10,300,457,651.11/117,331.32
  6. Step 6: Final answer
    x = 87,789.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.