Home / 137,183.76-206,120.16-87,285.60

Finding the Fourth Proportional to 137,183.76, 206,120.16 and 87,285.60

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Solution

The fourth proportional to 137,183.76, 206,120.16 and 87,285.60 is: 131,147.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,183.76 : 206,120.16 = 87,285.60 : x
  2. Step 2: Convert to fraction form
    137,183.76/206,120.16 = 87,285.60/x
  3. Step 3: Cross multiply
    137,183.76x = 206,120.16 × 87,285.60
  4. Step 4: Simplify right side
    137,183.76x = 17,991,321,837.70
  5. Step 5: Solve for x
    x = 17,991,321,837.70/137,183.76
  6. Step 6: Final answer
    x = 131,147.61

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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.