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Finding the Fourth Proportional to 138,269.54, 207,404.31 and 49,585.32

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Solution

The fourth proportional to 138,269.54, 207,404.31 and 49,585.32 is: 74,377.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,269.54 : 207,404.31 = 49,585.32 : x
  2. Step 2: Convert to fraction form
    138,269.54/207,404.31 = 49,585.32/x
  3. Step 3: Cross multiply
    138,269.54x = 207,404.31 × 49,585.32
  4. Step 4: Simplify right side
    138,269.54x = 10,284,209,710.54
  5. Step 5: Solve for x
    x = 10,284,209,710.54/138,269.54
  6. Step 6: Final answer
    x = 74,377.98

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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.