Home / 204,138.79-281,727.29-122,470.11

Finding the Fourth Proportional to 204,138.79, 281,727.29 and 122,470.11

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Solution

The fourth proportional to 204,138.79, 281,727.29 and 122,470.11 is: 169,018.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,138.79 : 281,727.29 = 122,470.11 : x
  2. Step 2: Convert to fraction form
    204,138.79/281,727.29 = 122,470.11/x
  3. Step 3: Cross multiply
    204,138.79x = 281,727.29 × 122,470.11
  4. Step 4: Simplify right side
    204,138.79x = 34,503,172,502.48
  5. Step 5: Solve for x
    x = 34,503,172,502.48/204,138.79
  6. Step 6: Final answer
    x = 169,018.21

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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.