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Finding the Fourth Proportional to 171,958.52, 258,079.92 and 87,780.88

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Solution

The fourth proportional to 171,958.52, 258,079.92 and 87,780.88 is: 131,743.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,958.52 : 258,079.92 = 87,780.88 : x
  2. Step 2: Convert to fraction form
    171,958.52/258,079.92 = 87,780.88/x
  3. Step 3: Cross multiply
    171,958.52x = 258,079.92 × 87,780.88
  4. Step 4: Simplify right side
    171,958.52x = 22,654,482,487.93
  5. Step 5: Solve for x
    x = 22,654,482,487.93/171,958.52
  6. Step 6: Final answer
    x = 131,743.88

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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.