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Finding the Fourth Proportional to 138,045.87, 207,023.85 and 44,529.75

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Solution

The fourth proportional to 138,045.87, 207,023.85 and 44,529.75 is: 66,780.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,045.87 : 207,023.85 = 44,529.75 : x
  2. Step 2: Convert to fraction form
    138,045.87/207,023.85 = 44,529.75/x
  3. Step 3: Cross multiply
    138,045.87x = 207,023.85 × 44,529.75
  4. Step 4: Simplify right side
    138,045.87x = 9,218,720,284.54
  5. Step 5: Solve for x
    x = 9,218,720,284.54/138,045.87
  6. Step 6: Final answer
    x = 66,780.12

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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.