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Finding the Fourth Proportional to 132,542.48, 198,938.28 and 69,407.92

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Solution

The fourth proportional to 132,542.48, 198,938.28 and 69,407.92 is: 104,177.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,542.48 : 198,938.28 = 69,407.92 : x
  2. Step 2: Convert to fraction form
    132,542.48/198,938.28 = 69,407.92/x
  3. Step 3: Cross multiply
    132,542.48x = 198,938.28 × 69,407.92
  4. Step 4: Simplify right side
    132,542.48x = 13,807,892,223.18
  5. Step 5: Solve for x
    x = 13,807,892,223.18/132,542.48
  6. Step 6: Final answer
    x = 104,177.11

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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.