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Finding the Fourth Proportional to 132,000.70, 198,001.05 and 72,805.90

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Solution

The fourth proportional to 132,000.70, 198,001.05 and 72,805.90 is: 109,208.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,000.70 : 198,001.05 = 72,805.90 : x
  2. Step 2: Convert to fraction form
    132,000.70/198,001.05 = 72,805.90/x
  3. Step 3: Cross multiply
    132,000.70x = 198,001.05 × 72,805.90
  4. Step 4: Simplify right side
    132,000.70x = 14,415,644,646.20
  5. Step 5: Solve for x
    x = 14,415,644,646.20/132,000.70
  6. Step 6: Final answer
    x = 109,208.85

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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.