Home / 129,618.36-194,454.66-54,738.72

Finding the Fourth Proportional to 129,618.36, 194,454.66 and 54,738.72

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Solution

The fourth proportional to 129,618.36, 194,454.66 and 54,738.72 is: 82,119.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,618.36 : 194,454.66 = 54,738.72 : x
  2. Step 2: Convert to fraction form
    129,618.36/194,454.66 = 54,738.72/x
  3. Step 3: Cross multiply
    129,618.36x = 194,454.66 × 54,738.72
  4. Step 4: Simplify right side
    129,618.36x = 10,644,199,186.44
  5. Step 5: Solve for x
    x = 10,644,199,186.44/129,618.36
  6. Step 6: Final answer
    x = 82,119.53

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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.