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Finding the Fourth Proportional to 99,906.90, 137,891.21 and 59,600.49

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Solution

The fourth proportional to 99,906.90, 137,891.21 and 59,600.49 is: 82,260.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,906.90 : 137,891.21 = 59,600.49 : x
  2. Step 2: Convert to fraction form
    99,906.90/137,891.21 = 59,600.49/x
  3. Step 3: Cross multiply
    99,906.90x = 137,891.21 × 59,600.49
  4. Step 4: Simplify right side
    99,906.90x = 8,218,383,384.69
  5. Step 5: Solve for x
    x = 8,218,383,384.69/99,906.90
  6. Step 6: Final answer
    x = 82,260.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.