Home / 131,246.20-196,869.30-81,163.90

Finding the Fourth Proportional to 131,246.20, 196,869.30 and 81,163.90

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Solution

The fourth proportional to 131,246.20, 196,869.30 and 81,163.90 is: 121,745.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,246.20 : 196,869.30 = 81,163.90 : x
  2. Step 2: Convert to fraction form
    131,246.20/196,869.30 = 81,163.90/x
  3. Step 3: Cross multiply
    131,246.20x = 196,869.30 × 81,163.90
  4. Step 4: Simplify right side
    131,246.20x = 15,978,680,178.27
  5. Step 5: Solve for x
    x = 15,978,680,178.27/131,246.20
  6. Step 6: Final answer
    x = 121,745.85

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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.