Home / 87,839.94-131,891.12-86,527.74

Finding the Fourth Proportional to 87,839.94, 131,891.12 and 86,527.74

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Solution

The fourth proportional to 87,839.94, 131,891.12 and 86,527.74 is: 129,920.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,839.94 : 131,891.12 = 86,527.74 : x
  2. Step 2: Convert to fraction form
    87,839.94/131,891.12 = 86,527.74/x
  3. Step 3: Cross multiply
    87,839.94x = 131,891.12 × 86,527.74
  4. Step 4: Simplify right side
    87,839.94x = 11,412,240,539.67
  5. Step 5: Solve for x
    x = 11,412,240,539.67/87,839.94
  6. Step 6: Final answer
    x = 129,920.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.