Home / 129,082.21-193,622.40-76,453.88

Finding the Fourth Proportional to 129,082.21, 193,622.40 and 76,453.88

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Solution

The fourth proportional to 129,082.21, 193,622.40 and 76,453.88 is: 114,680.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,082.21 : 193,622.40 = 76,453.88 : x
  2. Step 2: Convert to fraction form
    129,082.21/193,622.40 = 76,453.88/x
  3. Step 3: Cross multiply
    129,082.21x = 193,622.40 × 76,453.88
  4. Step 4: Simplify right side
    129,082.21x = 14,803,182,766.80
  5. Step 5: Solve for x
    x = 14,803,182,766.80/129,082.21
  6. Step 6: Final answer
    x = 114,680.27

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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.