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Finding the Fourth Proportional to 159,251.58, 219,675.75 and 99,531.90

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Solution

The fourth proportional to 159,251.58, 219,675.75 and 99,531.90 is: 137,296.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,251.58 : 219,675.75 = 99,531.90 : x
  2. Step 2: Convert to fraction form
    159,251.58/219,675.75 = 99,531.90/x
  3. Step 3: Cross multiply
    159,251.58x = 219,675.75 × 99,531.90
  4. Step 4: Simplify right side
    159,251.58x = 21,864,744,781.43
  5. Step 5: Solve for x
    x = 21,864,744,781.43/159,251.58
  6. Step 6: Final answer
    x = 137,296.88

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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.