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Finding the Fourth Proportional to 138,274.71, 207,442.31 and 44,789.91

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Solution

The fourth proportional to 138,274.71, 207,442.31 and 44,789.91 is: 67,194.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,274.71 : 207,442.31 = 44,789.91 : x
  2. Step 2: Convert to fraction form
    138,274.71/207,442.31 = 44,789.91/x
  3. Step 3: Cross multiply
    138,274.71x = 207,442.31 × 44,789.91
  4. Step 4: Simplify right side
    138,274.71x = 9,291,322,171.14
  5. Step 5: Solve for x
    x = 9,291,322,171.14/138,274.71
  6. Step 6: Final answer
    x = 67,194.66

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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.