Home / 129,672.12-194,157.45-67,211.40

Finding the Fourth Proportional to 129,672.12, 194,157.45 and 67,211.40

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Solution

The fourth proportional to 129,672.12, 194,157.45 and 67,211.40 is: 100,635.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,672.12 : 194,157.45 = 67,211.40 : x
  2. Step 2: Convert to fraction form
    129,672.12/194,157.45 = 67,211.40/x
  3. Step 3: Cross multiply
    129,672.12x = 194,157.45 × 67,211.40
  4. Step 4: Simplify right side
    129,672.12x = 13,049,594,034.93
  5. Step 5: Solve for x
    x = 13,049,594,034.93/129,672.12
  6. Step 6: Final answer
    x = 100,635.31

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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.