Home / 206,625.30-309,817.52-80,117.75

Finding the Fourth Proportional to 206,625.30, 309,817.52 and 80,117.75

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Solution

The fourth proportional to 206,625.30, 309,817.52 and 80,117.75 is: 120,129.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,625.30 : 309,817.52 = 80,117.75 : x
  2. Step 2: Convert to fraction form
    206,625.30/309,817.52 = 80,117.75/x
  3. Step 3: Cross multiply
    206,625.30x = 309,817.52 × 80,117.75
  4. Step 4: Simplify right side
    206,625.30x = 24,821,880,663.30
  5. Step 5: Solve for x
    x = 24,821,880,663.30/206,625.30
  6. Step 6: Final answer
    x = 120,129.92

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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.