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Finding the Fourth Proportional to 138,486.68, 207,641.24 and 58,503

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Solution

The fourth proportional to 138,486.68, 207,641.24 and 58,503 is: 87,717.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,486.68 : 207,641.24 = 58,503 : x
  2. Step 2: Convert to fraction form
    138,486.68/207,641.24 = 58,503/x
  3. Step 3: Cross multiply
    138,486.68x = 207,641.24 × 58,503
  4. Step 4: Simplify right side
    138,486.68x = 12,147,635,463.72
  5. Step 5: Solve for x
    x = 12,147,635,463.72/138,486.68
  6. Step 6: Final answer
    x = 87,717.00

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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.