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Finding the Fourth Proportional to 137,708.60, 206,562.90 and 132,897.20

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Solution

The fourth proportional to 137,708.60, 206,562.90 and 132,897.20 is: 199,345.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,708.60 : 206,562.90 = 132,897.20 : x
  2. Step 2: Convert to fraction form
    137,708.60/206,562.90 = 132,897.20/x
  3. Step 3: Cross multiply
    137,708.60x = 206,562.90 × 132,897.20
  4. Step 4: Simplify right side
    137,708.60x = 27,451,631,033.88
  5. Step 5: Solve for x
    x = 27,451,631,033.88/137,708.60
  6. Step 6: Final answer
    x = 199,345.80

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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.