Home / 143,785.78-198,401.02-83,344.61

Finding the Fourth Proportional to 143,785.78, 198,401.02 and 83,344.61

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Solution

The fourth proportional to 143,785.78, 198,401.02 and 83,344.61 is: 115,002.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,785.78 : 198,401.02 = 83,344.61 : x
  2. Step 2: Convert to fraction form
    143,785.78/198,401.02 = 83,344.61/x
  3. Step 3: Cross multiply
    143,785.78x = 198,401.02 × 83,344.61
  4. Step 4: Simplify right side
    143,785.78x = 16,535,654,747.68
  5. Step 5: Solve for x
    x = 16,535,654,747.68/143,785.78
  6. Step 6: Final answer
    x = 115,002.02

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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.