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Finding the Fourth Proportional to 132,453.52, 198,721.30 and 45,906.78

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Solution

The fourth proportional to 132,453.52, 198,721.30 and 45,906.78 is: 68,874.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,453.52 : 198,721.30 = 45,906.78 : x
  2. Step 2: Convert to fraction form
    132,453.52/198,721.30 = 45,906.78/x
  3. Step 3: Cross multiply
    132,453.52x = 198,721.30 × 45,906.78
  4. Step 4: Simplify right side
    132,453.52x = 9,122,655,000.41
  5. Step 5: Solve for x
    x = 9,122,655,000.41/132,453.52
  6. Step 6: Final answer
    x = 68,874.39

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1.5x scale

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.