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Finding the Fourth Proportional to 172,371.31, 258,799.19 and 88,191.86

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Solution

The fourth proportional to 172,371.31, 258,799.19 and 88,191.86 is: 132,411.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,371.31 : 258,799.19 = 88,191.86 : x
  2. Step 2: Convert to fraction form
    172,371.31/258,799.19 = 88,191.86/x
  3. Step 3: Cross multiply
    172,371.31x = 258,799.19 × 88,191.86
  4. Step 4: Simplify right side
    172,371.31x = 22,823,980,197.64
  5. Step 5: Solve for x
    x = 22,823,980,197.64/172,371.31
  6. Step 6: Final answer
    x = 132,411.71

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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.