Home / 87,928.11-131,753.84-67,986.32

Finding the Fourth Proportional to 87,928.11, 131,753.84 and 67,986.32

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Solution

The fourth proportional to 87,928.11, 131,753.84 and 67,986.32 is: 101,872.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,928.11 : 131,753.84 = 67,986.32 : x
  2. Step 2: Convert to fraction form
    87,928.11/131,753.84 = 67,986.32/x
  3. Step 3: Cross multiply
    87,928.11x = 131,753.84 × 67,986.32
  4. Step 4: Simplify right side
    87,928.11x = 8,957,457,728.77
  5. Step 5: Solve for x
    x = 8,957,457,728.77/87,928.11
  6. Step 6: Final answer
    x = 101,872.52

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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.