Home / 131,126.70-196,690.05-68,789.10

Finding the Fourth Proportional to 131,126.70, 196,690.05 and 68,789.10

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Solution

The fourth proportional to 131,126.70, 196,690.05 and 68,789.10 is: 103,183.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,126.70 : 196,690.05 = 68,789.10 : x
  2. Step 2: Convert to fraction form
    131,126.70/196,690.05 = 68,789.10/x
  3. Step 3: Cross multiply
    131,126.70x = 196,690.05 × 68,789.10
  4. Step 4: Simplify right side
    131,126.70x = 13,530,131,518.46
  5. Step 5: Solve for x
    x = 13,530,131,518.46/131,126.70
  6. Step 6: Final answer
    x = 103,183.65

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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.