Home / 226,721.64-312,902.82-129,960.12

Finding the Fourth Proportional to 226,721.64, 312,902.82 and 129,960.12

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Solution

The fourth proportional to 226,721.64, 312,902.82 and 129,960.12 is: 179,360.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,721.64 : 312,902.82 = 129,960.12 : x
  2. Step 2: Convert to fraction form
    226,721.64/312,902.82 = 129,960.12/x
  3. Step 3: Cross multiply
    226,721.64x = 312,902.82 × 129,960.12
  4. Step 4: Simplify right side
    226,721.64x = 40,664,888,035.54
  5. Step 5: Solve for x
    x = 40,664,888,035.54/226,721.64
  6. Step 6: Final answer
    x = 179,360.42

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1.5x scale

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.