Home / 206,108.20-308,982.30-79,834.60

Finding the Fourth Proportional to 206,108.20, 308,982.30 and 79,834.60

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Solution

The fourth proportional to 206,108.20, 308,982.30 and 79,834.60 is: 119,682.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,108.20 : 308,982.30 = 79,834.60 : x
  2. Step 2: Convert to fraction form
    206,108.20/308,982.30 = 79,834.60/x
  3. Step 3: Cross multiply
    206,108.20x = 308,982.30 × 79,834.60
  4. Step 4: Simplify right side
    206,108.20x = 24,667,478,327.58
  5. Step 5: Solve for x
    x = 24,667,478,327.58/206,108.20
  6. Step 6: Final answer
    x = 119,682.18

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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.