Home / 206,320.35-309,415.83-79,951.85

Finding the Fourth Proportional to 206,320.35, 309,415.83 and 79,951.85

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Solution

The fourth proportional to 206,320.35, 309,415.83 and 79,951.85 is: 119,902.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,320.35 : 309,415.83 = 79,951.85 : x
  2. Step 2: Convert to fraction form
    206,320.35/309,415.83 = 79,951.85/x
  3. Step 3: Cross multiply
    206,320.35x = 309,415.83 × 79,951.85
  4. Step 4: Simplify right side
    206,320.35x = 24,738,368,027.79
  5. Step 5: Solve for x
    x = 24,738,368,027.79/206,320.35
  6. Step 6: Final answer
    x = 119,902.70

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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.