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Finding the Fourth Proportional to 138,503.63, 207,591.42 and 63,560.61

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Solution

The fourth proportional to 138,503.63, 207,591.42 and 63,560.61 is: 95,265.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,503.63 : 207,591.42 = 63,560.61 : x
  2. Step 2: Convert to fraction form
    138,503.63/207,591.42 = 63,560.61/x
  3. Step 3: Cross multiply
    138,503.63x = 207,591.42 × 63,560.61
  4. Step 4: Simplify right side
    138,503.63x = 13,194,637,285.97
  5. Step 5: Solve for x
    x = 13,194,637,285.97/138,503.63
  6. Step 6: Final answer
    x = 95,265.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.