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Finding the Fourth Proportional to 172,396.92, 258,386 and 92,237.70

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Solution

The fourth proportional to 172,396.92, 258,386 and 92,237.70 is: 138,244.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,396.92 : 258,386 = 92,237.70 : x
  2. Step 2: Convert to fraction form
    172,396.92/258,386 = 92,237.70/x
  3. Step 3: Cross multiply
    172,396.92x = 258,386 × 92,237.70
  4. Step 4: Simplify right side
    172,396.92x = 23,832,930,352.20
  5. Step 5: Solve for x
    x = 23,832,930,352.20/172,396.92
  6. Step 6: Final answer
    x = 138,244.53

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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.