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Finding the Fourth Proportional to 125,481.57, 173,142 and 71,033.37

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Solution

The fourth proportional to 125,481.57, 173,142 and 71,033.37 is: 98,013.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,481.57 : 173,142 = 71,033.37 : x
  2. Step 2: Convert to fraction form
    125,481.57/173,142 = 71,033.37/x
  3. Step 3: Cross multiply
    125,481.57x = 173,142 × 71,033.37
  4. Step 4: Simplify right side
    125,481.57x = 12,298,859,748.54
  5. Step 5: Solve for x
    x = 12,298,859,748.54/125,481.57
  6. Step 6: Final answer
    x = 98,013.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.