Home / 131,839.44-181,906.93-78,115.17

Finding the Fourth Proportional to 131,839.44, 181,906.93 and 78,115.17

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Solution

The fourth proportional to 131,839.44, 181,906.93 and 78,115.17 is: 107,780.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,839.44 : 181,906.93 = 78,115.17 : x
  2. Step 2: Convert to fraction form
    131,839.44/181,906.93 = 78,115.17/x
  3. Step 3: Cross multiply
    131,839.44x = 181,906.93 × 78,115.17
  4. Step 4: Simplify right side
    131,839.44x = 14,209,690,761.13
  5. Step 5: Solve for x
    x = 14,209,690,761.13/131,839.44
  6. Step 6: Final answer
    x = 107,780.27

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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.