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Finding the Fourth Proportional to 206,687.57, 309,910.68 and 80,179.98

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Solution

The fourth proportional to 206,687.57, 309,910.68 and 80,179.98 is: 120,223.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,687.57 : 309,910.68 = 80,179.98 : x
  2. Step 2: Convert to fraction form
    206,687.57/309,910.68 = 80,179.98/x
  3. Step 3: Cross multiply
    206,687.57x = 309,910.68 × 80,179.98
  4. Step 4: Simplify right side
    206,687.57x = 24,848,631,187.53
  5. Step 5: Solve for x
    x = 24,848,631,187.53/206,687.57
  6. Step 6: Final answer
    x = 120,223.15

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1.5x scale

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.