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Finding the Fourth Proportional to 168,481.54, 252,761.20 and 89,671.78

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Solution

The fourth proportional to 168,481.54, 252,761.20 and 89,671.78 is: 134,528.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,481.54 : 252,761.20 = 89,671.78 : x
  2. Step 2: Convert to fraction form
    168,481.54/252,761.20 = 89,671.78/x
  3. Step 3: Cross multiply
    168,481.54x = 252,761.20 × 89,671.78
  4. Step 4: Simplify right side
    168,481.54x = 22,665,546,718.94
  5. Step 5: Solve for x
    x = 22,665,546,718.94/168,481.54
  6. Step 6: Final answer
    x = 134,528.37

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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.