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Finding the Fourth Proportional to 138,286.58, 207,500.94 and 119,686.14

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Solution

The fourth proportional to 138,286.58, 207,500.94 and 119,686.14 is: 179,590.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,286.58 : 207,500.94 = 119,686.14 : x
  2. Step 2: Convert to fraction form
    138,286.58/207,500.94 = 119,686.14/x
  3. Step 3: Cross multiply
    138,286.58x = 207,500.94 × 119,686.14
  4. Step 4: Simplify right side
    138,286.58x = 24,834,986,554.97
  5. Step 5: Solve for x
    x = 24,834,986,554.97/138,286.58
  6. Step 6: Final answer
    x = 179,590.73

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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.