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Finding the Fourth Proportional to 132,630.20, 198,945.32 and 126,871.12

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Solution

The fourth proportional to 132,630.20, 198,945.32 and 126,871.12 is: 190,306.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,630.20 : 198,945.32 = 126,871.12 : x
  2. Step 2: Convert to fraction form
    132,630.20/198,945.32 = 126,871.12/x
  3. Step 3: Cross multiply
    132,630.20x = 198,945.32 × 126,871.12
  4. Step 4: Simplify right side
    132,630.20x = 25,240,415,567.16
  5. Step 5: Solve for x
    x = 25,240,415,567.16/132,630.20
  6. Step 6: Final answer
    x = 190,306.70

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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.