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Finding the Fourth Proportional to 172,515.86, 258,691.92 and 60,182.42

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Solution

The fourth proportional to 172,515.86, 258,691.92 and 60,182.42 is: 90,245.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,515.86 : 258,691.92 = 60,182.42 : x
  2. Step 2: Convert to fraction form
    172,515.86/258,691.92 = 60,182.42/x
  3. Step 3: Cross multiply
    172,515.86x = 258,691.92 × 60,182.42
  4. Step 4: Simplify right side
    172,515.86x = 15,568,705,780.05
  5. Step 5: Solve for x
    x = 15,568,705,780.05/172,515.86
  6. Step 6: Final answer
    x = 90,245.07

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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.