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Finding the Fourth Proportional to 171,162.30, 256,640.92 and 81,227.39

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Solution

The fourth proportional to 171,162.30, 256,640.92 and 81,227.39 is: 121,792.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,162.30 : 256,640.92 = 81,227.39 : x
  2. Step 2: Convert to fraction form
    171,162.30/256,640.92 = 81,227.39/x
  3. Step 3: Cross multiply
    171,162.30x = 256,640.92 × 81,227.39
  4. Step 4: Simplify right side
    171,162.30x = 20,846,272,098.80
  5. Step 5: Solve for x
    x = 20,846,272,098.80/171,162.30
  6. Step 6: Final answer
    x = 121,792.43

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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.