Home / 206,134.70-309,022.05-79,861.10

Finding the Fourth Proportional to 206,134.70, 309,022.05 and 79,861.10

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Solution

The fourth proportional to 206,134.70, 309,022.05 and 79,861.10 is: 119,721.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,134.70 : 309,022.05 = 79,861.10 : x
  2. Step 2: Convert to fraction form
    206,134.70/309,022.05 = 79,861.10/x
  3. Step 3: Cross multiply
    206,134.70x = 309,022.05 × 79,861.10
  4. Step 4: Simplify right side
    206,134.70x = 24,678,840,837.26
  5. Step 5: Solve for x
    x = 24,678,840,837.26/206,134.70
  6. Step 6: Final answer
    x = 119,721.91

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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.