Home / 143,691.12-198,299.86-80,028.92

Finding the Fourth Proportional to 143,691.12, 198,299.86 and 80,028.92

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Solution

The fourth proportional to 143,691.12, 198,299.86 and 80,028.92 is: 110,443.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,691.12 : 198,299.86 = 80,028.92 : x
  2. Step 2: Convert to fraction form
    143,691.12/198,299.86 = 80,028.92/x
  3. Step 3: Cross multiply
    143,691.12x = 198,299.86 × 80,028.92
  4. Step 4: Simplify right side
    143,691.12x = 15,869,723,631.95
  5. Step 5: Solve for x
    x = 15,869,723,631.95/143,691.12
  6. Step 6: Final answer
    x = 110,443.32

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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.