Home / 206,140.24-309,105.87-73,001.76

Finding the Fourth Proportional to 206,140.24, 309,105.87 and 73,001.76

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Solution

The fourth proportional to 206,140.24, 309,105.87 and 73,001.76 is: 109,465.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,140.24 : 309,105.87 = 73,001.76 : x
  2. Step 2: Convert to fraction form
    206,140.24/309,105.87 = 73,001.76/x
  3. Step 3: Cross multiply
    206,140.24x = 309,105.87 × 73,001.76
  4. Step 4: Simplify right side
    206,140.24x = 22,565,271,514.06
  5. Step 5: Solve for x
    x = 22,565,271,514.06/206,140.24
  6. Step 6: Final answer
    x = 109,465.63

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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.