Home / 143,972.64-198,691.38-80,310.30

Finding the Fourth Proportional to 143,972.64, 198,691.38 and 80,310.30

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Solution

The fourth proportional to 143,972.64, 198,691.38 and 80,310.30 is: 110,833.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,972.64 : 198,691.38 = 80,310.30 : x
  2. Step 2: Convert to fraction form
    143,972.64/198,691.38 = 80,310.30/x
  3. Step 3: Cross multiply
    143,972.64x = 198,691.38 × 80,310.30
  4. Step 4: Simplify right side
    143,972.64x = 15,956,964,335.21
  5. Step 5: Solve for x
    x = 15,956,964,335.21/143,972.64
  6. Step 6: Final answer
    x = 110,833.31

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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.