Home / 143,982.30-198,691.11-80,330.88

Finding the Fourth Proportional to 143,982.30, 198,691.11 and 80,330.88

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Solution

The fourth proportional to 143,982.30, 198,691.11 and 80,330.88 is: 110,854.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,982.30 : 198,691.11 = 80,330.88 : x
  2. Step 2: Convert to fraction form
    143,982.30/198,691.11 = 80,330.88/x
  3. Step 3: Cross multiply
    143,982.30x = 198,691.11 × 80,330.88
  4. Step 4: Simplify right side
    143,982.30x = 15,961,031,714.48
  5. Step 5: Solve for x
    x = 15,961,031,714.48/143,982.30
  6. Step 6: Final answer
    x = 110,854.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.