Home / 87,930.12-131,756.84-67,988.32

Finding the Fourth Proportional to 87,930.12, 131,756.84 and 67,988.32

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Solution

The fourth proportional to 87,930.12, 131,756.84 and 67,988.32 is: 101,875.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,930.12 : 131,756.84 = 67,988.32 : x
  2. Step 2: Convert to fraction form
    87,930.12/131,756.84 = 67,988.32/x
  3. Step 3: Cross multiply
    87,930.12x = 131,756.84 × 67,988.32
  4. Step 4: Simplify right side
    87,930.12x = 8,957,926,200.11
  5. Step 5: Solve for x
    x = 8,957,926,200.11/87,930.12
  6. Step 6: Final answer
    x = 101,875.51

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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.