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Finding the Fourth Proportional to 138,424.60, 207,636.90 and 44,930.35

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Solution

The fourth proportional to 138,424.60, 207,636.90 and 44,930.35 is: 67,395.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,424.60 : 207,636.90 = 44,930.35 : x
  2. Step 2: Convert to fraction form
    138,424.60/207,636.90 = 44,930.35/x
  3. Step 3: Cross multiply
    138,424.60x = 207,636.90 × 44,930.35
  4. Step 4: Simplify right side
    138,424.60x = 9,329,198,589.92
  5. Step 5: Solve for x
    x = 9,329,198,589.92/138,424.60
  6. Step 6: Final answer
    x = 67,395.53

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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.