Home / 133,082.40-199,523.76-80,481.12

Finding the Fourth Proportional to 133,082.40, 199,523.76 and 80,481.12

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Solution

The fourth proportional to 133,082.40, 199,523.76 and 80,481.12 is: 120,661.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,082.40 : 199,523.76 = 80,481.12 : x
  2. Step 2: Convert to fraction form
    133,082.40/199,523.76 = 80,481.12/x
  3. Step 3: Cross multiply
    133,082.40x = 199,523.76 × 80,481.12
  4. Step 4: Simplify right side
    133,082.40x = 16,057,895,671.41
  5. Step 5: Solve for x
    x = 16,057,895,671.41/133,082.40
  6. Step 6: Final answer
    x = 120,661.30

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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.