Home / 131,183.38-196,879.92-68,021.50

Finding the Fourth Proportional to 131,183.38, 196,879.92 and 68,021.50

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Solution

The fourth proportional to 131,183.38, 196,879.92 and 68,021.50 is: 102,086.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,183.38 : 196,879.92 = 68,021.50 : x
  2. Step 2: Convert to fraction form
    131,183.38/196,879.92 = 68,021.50/x
  3. Step 3: Cross multiply
    131,183.38x = 196,879.92 × 68,021.50
  4. Step 4: Simplify right side
    131,183.38x = 13,392,067,478.28
  5. Step 5: Solve for x
    x = 13,392,067,478.28/131,183.38
  6. Step 6: Final answer
    x = 102,086.62

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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.