Home / 206,320.77-309,481.16-136,183.68

Finding the Fourth Proportional to 206,320.77, 309,481.16 and 136,183.68

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Solution

The fourth proportional to 206,320.77, 309,481.16 and 136,183.68 is: 204,275.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,320.77 : 309,481.16 = 136,183.68 : x
  2. Step 2: Convert to fraction form
    206,320.77/309,481.16 = 136,183.68/x
  3. Step 3: Cross multiply
    206,320.77x = 309,481.16 × 136,183.68
  4. Step 4: Simplify right side
    206,320.77x = 42,146,282,578.55
  5. Step 5: Solve for x
    x = 42,146,282,578.55/206,320.77
  6. Step 6: Final answer
    x = 204,275.52

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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.