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Finding the Fourth Proportional to 138,230.73, 207,347.99 and 49,489.83

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Solution

The fourth proportional to 138,230.73, 207,347.99 and 49,489.83 is: 74,235.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,230.73 : 207,347.99 = 49,489.83 : x
  2. Step 2: Convert to fraction form
    138,230.73/207,347.99 = 49,489.83/x
  3. Step 3: Cross multiply
    138,230.73x = 207,347.99 × 49,489.83
  4. Step 4: Simplify right side
    138,230.73x = 10,261,616,528.49
  5. Step 5: Solve for x
    x = 10,261,616,528.49/138,230.73
  6. Step 6: Final answer
    x = 74,235.42

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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.