Home / 130,672.20-196,008.30-80,589.90

Finding the Fourth Proportional to 130,672.20, 196,008.30 and 80,589.90

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Solution

The fourth proportional to 130,672.20, 196,008.30 and 80,589.90 is: 120,884.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,672.20 : 196,008.30 = 80,589.90 : x
  2. Step 2: Convert to fraction form
    130,672.20/196,008.30 = 80,589.90/x
  3. Step 3: Cross multiply
    130,672.20x = 196,008.30 × 80,589.90
  4. Step 4: Simplify right side
    130,672.20x = 15,796,289,296.17
  5. Step 5: Solve for x
    x = 15,796,289,296.17/130,672.20
  6. Step 6: Final answer
    x = 120,884.85

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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.