Home / 129,965.28-179,343.66-75,512.64

Finding the Fourth Proportional to 129,965.28, 179,343.66 and 75,512.64

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Solution

The fourth proportional to 129,965.28, 179,343.66 and 75,512.64 is: 104,202.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,965.28 : 179,343.66 = 75,512.64 : x
  2. Step 2: Convert to fraction form
    129,965.28/179,343.66 = 75,512.64/x
  3. Step 3: Cross multiply
    129,965.28x = 179,343.66 × 75,512.64
  4. Step 4: Simplify right side
    129,965.28x = 13,542,713,233.86
  5. Step 5: Solve for x
    x = 13,542,713,233.86/129,965.28
  6. Step 6: Final answer
    x = 104,202.55

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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.