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Finding the Fourth Proportional to 138,265.71, 207,428.81 and 44,780.91

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Solution

The fourth proportional to 138,265.71, 207,428.81 and 44,780.91 is: 67,181.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,265.71 : 207,428.81 = 44,780.91 : x
  2. Step 2: Convert to fraction form
    138,265.71/207,428.81 = 44,780.91/x
  3. Step 3: Cross multiply
    138,265.71x = 207,428.81 × 44,780.91
  4. Step 4: Simplify right side
    138,265.71x = 9,288,850,648.11
  5. Step 5: Solve for x
    x = 9,288,850,648.11/138,265.71
  6. Step 6: Final answer
    x = 67,181.16

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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.