Home / 80,126.92-120,312.69-67,808.44

Finding the Fourth Proportional to 80,126.92, 120,312.69 and 67,808.44

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Solution

The fourth proportional to 80,126.92, 120,312.69 and 67,808.44 is: 101,816.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,126.92 : 120,312.69 = 67,808.44 : x
  2. Step 2: Convert to fraction form
    80,126.92/120,312.69 = 67,808.44/x
  3. Step 3: Cross multiply
    80,126.92x = 120,312.69 × 67,808.44
  4. Step 4: Simplify right side
    80,126.92x = 8,158,215,821.10
  5. Step 5: Solve for x
    x = 8,158,215,821.10/80,126.92
  6. Step 6: Final answer
    x = 101,816.17

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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.