Home / 131,305.60-197,177.10-72,183.70

Finding the Fourth Proportional to 131,305.60, 197,177.10 and 72,183.70

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Solution

The fourth proportional to 131,305.60, 197,177.10 and 72,183.70 is: 108,395.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,305.60 : 197,177.10 = 72,183.70 : x
  2. Step 2: Convert to fraction form
    131,305.60/197,177.10 = 72,183.70/x
  3. Step 3: Cross multiply
    131,305.60x = 197,177.10 × 72,183.70
  4. Step 4: Simplify right side
    131,305.60x = 14,232,972,633.27
  5. Step 5: Solve for x
    x = 14,232,972,633.27/131,305.60
  6. Step 6: Final answer
    x = 108,395.78

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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.