Home / 131,446.20-197,169.30-81,363.90

Finding the Fourth Proportional to 131,446.20, 197,169.30 and 81,363.90

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Solution

The fourth proportional to 131,446.20, 197,169.30 and 81,363.90 is: 122,045.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,446.20 : 197,169.30 = 81,363.90 : x
  2. Step 2: Convert to fraction form
    131,446.20/197,169.30 = 81,363.90/x
  3. Step 3: Cross multiply
    131,446.20x = 197,169.30 × 81,363.90
  4. Step 4: Simplify right side
    131,446.20x = 16,042,463,208.27
  5. Step 5: Solve for x
    x = 16,042,463,208.27/131,446.20
  6. Step 6: Final answer
    x = 122,045.85

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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.