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Finding the Fourth Proportional to 138,330.60, 207,593.10 and 88,531.80

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Solution

The fourth proportional to 138,330.60, 207,593.10 and 88,531.80 is: 132,859.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,330.60 : 207,593.10 = 88,531.80 : x
  2. Step 2: Convert to fraction form
    138,330.60/207,593.10 = 88,531.80/x
  3. Step 3: Cross multiply
    138,330.60x = 207,593.10 × 88,531.80
  4. Step 4: Simplify right side
    138,330.60x = 18,378,590,810.58
  5. Step 5: Solve for x
    x = 18,378,590,810.58/138,330.60
  6. Step 6: Final answer
    x = 132,859.91

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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.