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Finding the Fourth Proportional to 157,602.46, 217,490.92 and 85,981.97

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Solution

The fourth proportional to 157,602.46, 217,490.92 and 85,981.97 is: 118,654.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,602.46 : 217,490.92 = 85,981.97 : x
  2. Step 2: Convert to fraction form
    157,602.46/217,490.92 = 85,981.97/x
  3. Step 3: Cross multiply
    157,602.46x = 217,490.92 × 85,981.97
  4. Step 4: Simplify right side
    157,602.46x = 18,700,297,758.71
  5. Step 5: Solve for x
    x = 18,700,297,758.71/157,602.46
  6. Step 6: Final answer
    x = 118,654.86

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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.