Home / 131,785.14-181,863.20-71,355.80

Finding the Fourth Proportional to 131,785.14, 181,863.20 and 71,355.80

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Solution

The fourth proportional to 131,785.14, 181,863.20 and 71,355.80 is: 98,470.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,785.14 : 181,863.20 = 71,355.80 : x
  2. Step 2: Convert to fraction form
    131,785.14/181,863.20 = 71,355.80/x
  3. Step 3: Cross multiply
    131,785.14x = 181,863.20 × 71,355.80
  4. Step 4: Simplify right side
    131,785.14x = 12,976,994,126.56
  5. Step 5: Solve for x
    x = 12,976,994,126.56/131,785.14
  6. Step 6: Final answer
    x = 98,470.85

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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.