Home / 87,928.29-131,754.13-67,986.50

Finding the Fourth Proportional to 87,928.29, 131,754.13 and 67,986.50

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Solution

The fourth proportional to 87,928.29, 131,754.13 and 67,986.50 is: 101,872.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,928.29 : 131,754.13 = 67,986.50 : x
  2. Step 2: Convert to fraction form
    87,928.29/131,754.13 = 67,986.50/x
  3. Step 3: Cross multiply
    87,928.29x = 131,754.13 × 67,986.50
  4. Step 4: Simplify right side
    87,928.29x = 8,957,501,330.51
  5. Step 5: Solve for x
    x = 8,957,501,330.51/87,928.29
  6. Step 6: Final answer
    x = 101,872.80

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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.