Home / 195,821.96-270,143.10-115,198.20

Finding the Fourth Proportional to 195,821.96, 270,143.10 and 115,198.20

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Solution

The fourth proportional to 195,821.96, 270,143.10 and 115,198.20 is: 158,919.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    195,821.96 : 270,143.10 = 115,198.20 : x
  2. Step 2: Convert to fraction form
    195,821.96/270,143.10 = 115,198.20/x
  3. Step 3: Cross multiply
    195,821.96x = 270,143.10 × 115,198.20
  4. Step 4: Simplify right side
    195,821.96x = 31,119,998,862.42
  5. Step 5: Solve for x
    x = 31,119,998,862.42/195,821.96
  6. Step 6: Final answer
    x = 158,919.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.