Home / 206,081.24-309,147.78-72,930.20

Finding the Fourth Proportional to 206,081.24, 309,147.78 and 72,930.20

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Solution

The fourth proportional to 206,081.24, 309,147.78 and 72,930.20 is: 109,404.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,081.24 : 309,147.78 = 72,930.20 : x
  2. Step 2: Convert to fraction form
    206,081.24/309,147.78 = 72,930.20/x
  3. Step 3: Cross multiply
    206,081.24x = 309,147.78 × 72,930.20
  4. Step 4: Simplify right side
    206,081.24x = 22,546,209,424.96
  5. Step 5: Solve for x
    x = 22,546,209,424.96/206,081.24
  6. Step 6: Final answer
    x = 109,404.47

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1.5x scale

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.