Home / 143,553.91-198,102.47-79,891.69

Finding the Fourth Proportional to 143,553.91, 198,102.47 and 79,891.69

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Solution

The fourth proportional to 143,553.91, 198,102.47 and 79,891.69 is: 110,249.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,553.91 : 198,102.47 = 79,891.69 : x
  2. Step 2: Convert to fraction form
    143,553.91/198,102.47 = 79,891.69/x
  3. Step 3: Cross multiply
    143,553.91x = 198,102.47 × 79,891.69
  4. Step 4: Simplify right side
    143,553.91x = 15,826,741,121.47
  5. Step 5: Solve for x
    x = 15,826,741,121.47/143,553.91
  6. Step 6: Final answer
    x = 110,249.46

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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.