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Finding the Fourth Proportional to 157,487.49, 217,332.72 and 85,867.70

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Solution

The fourth proportional to 157,487.49, 217,332.72 and 85,867.70 is: 118,497.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,487.49 : 217,332.72 = 85,867.70 : x
  2. Step 2: Convert to fraction form
    157,487.49/217,332.72 = 85,867.70/x
  3. Step 3: Cross multiply
    157,487.49x = 217,332.72 × 85,867.70
  4. Step 4: Simplify right side
    157,487.49x = 18,661,859,714.48
  5. Step 5: Solve for x
    x = 18,661,859,714.48/157,487.49
  6. Step 6: Final answer
    x = 118,497.41

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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.