Home / 143,887.82-198,565.19-80,225.61

Finding the Fourth Proportional to 143,887.82, 198,565.19 and 80,225.61

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Solution

The fourth proportional to 143,887.82, 198,565.19 and 80,225.61 is: 110,711.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,887.82 : 198,565.19 = 80,225.61 : x
  2. Step 2: Convert to fraction form
    143,887.82/198,565.19 = 80,225.61/x
  3. Step 3: Cross multiply
    143,887.82x = 198,565.19 × 80,225.61
  4. Step 4: Simplify right side
    143,887.82x = 15,930,013,091.39
  5. Step 5: Solve for x
    x = 15,930,013,091.39/143,887.82
  6. Step 6: Final answer
    x = 110,711.34

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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.