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Finding the Fourth Proportional to 206,164.95, 309,149.96 and 79,864.35

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Solution

The fourth proportional to 206,164.95, 309,149.96 and 79,864.35 is: 119,758.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,164.95 : 309,149.96 = 79,864.35 : x
  2. Step 2: Convert to fraction form
    206,164.95/309,149.96 = 79,864.35/x
  3. Step 3: Cross multiply
    206,164.95x = 309,149.96 × 79,864.35
  4. Step 4: Simplify right side
    206,164.95x = 24,690,060,208.60
  5. Step 5: Solve for x
    x = 24,690,060,208.60/206,164.95
  6. Step 6: Final answer
    x = 119,758.77

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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.