Home / 132,192,012.70-198,288,019.05-80,459,839.90

Finding the Fourth Proportional to 132,192,012.70, 198,288,019.05 and 80,459,839.90

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Solution

The fourth proportional to 132,192,012.70, 198,288,019.05 and 80,459,839.90 is: 120,689,759.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,192,012.70 : 198,288,019.05 = 80,459,839.90 : x
  2. Step 2: Convert to fraction form
    132,192,012.70/198,288,019.05 = 80,459,839.90/x
  3. Step 3: Cross multiply
    132,192,012.70x = 198,288,019.05 × 80,459,839.90
  4. Step 4: Simplify right side
    132,192,012.70x = 15,954,222,266,851,152
  5. Step 5: Solve for x
    x = 15,954,222,266,851,152/132,192,012.70
  6. Step 6: Final answer
    x = 120,689,759.85

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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.