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Finding the Fourth Proportional to 172,367.28, 258,793.11 and 88,187.83

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Solution

The fourth proportional to 172,367.28, 258,793.11 and 88,187.83 is: 132,405.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,367.28 : 258,793.11 = 88,187.83 : x
  2. Step 2: Convert to fraction form
    172,367.28/258,793.11 = 88,187.83/x
  3. Step 3: Cross multiply
    172,367.28x = 258,793.11 × 88,187.83
  4. Step 4: Simplify right side
    172,367.28x = 22,822,402,789.85
  5. Step 5: Solve for x
    x = 22,822,402,789.85/172,367.28
  6. Step 6: Final answer
    x = 132,405.66

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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.