Home / 143,833.52-198,496.98-80,171.78

Finding the Fourth Proportional to 143,833.52, 198,496.98 and 80,171.78

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Solution

The fourth proportional to 143,833.52, 198,496.98 and 80,171.78 is: 110,640.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,833.52 : 198,496.98 = 80,171.78 : x
  2. Step 2: Convert to fraction form
    143,833.52/198,496.98 = 80,171.78/x
  3. Step 3: Cross multiply
    143,833.52x = 198,496.98 × 80,171.78
  4. Step 4: Simplify right side
    143,833.52x = 15,913,855,218.74
  5. Step 5: Solve for x
    x = 15,913,855,218.74/143,833.52
  6. Step 6: Final answer
    x = 110,640.79

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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.