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Finding the Fourth Proportional to 206,192.91, 309,192.30 and 79,892.31

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Solution

The fourth proportional to 206,192.91, 309,192.30 and 79,892.31 is: 119,800.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,192.91 : 309,192.30 = 79,892.31 : x
  2. Step 2: Convert to fraction form
    206,192.91/309,192.30 = 79,892.31/x
  3. Step 3: Cross multiply
    206,192.91x = 309,192.30 × 79,892.31
  4. Step 4: Simplify right side
    206,192.91x = 24,702,087,081.21
  5. Step 5: Solve for x
    x = 24,702,087,081.21/206,192.91
  6. Step 6: Final answer
    x = 119,800.86

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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.