Home / 129,427.66-194,085.90-45,162.55

Finding the Fourth Proportional to 129,427.66, 194,085.90 and 45,162.55

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Solution

The fourth proportional to 129,427.66, 194,085.90 and 45,162.55 is: 67,724.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,427.66 : 194,085.90 = 45,162.55 : x
  2. Step 2: Convert to fraction form
    129,427.66/194,085.90 = 45,162.55/x
  3. Step 3: Cross multiply
    129,427.66x = 194,085.90 × 45,162.55
  4. Step 4: Simplify right side
    129,427.66x = 8,765,414,163.05
  5. Step 5: Solve for x
    x = 8,765,414,163.05/129,427.66
  6. Step 6: Final answer
    x = 67,724.43

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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.