Home / 161,311.57-222,608.62-89,690.97

Finding the Fourth Proportional to 161,311.57, 222,608.62 and 89,690.97

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Solution

The fourth proportional to 161,311.57, 222,608.62 and 89,690.97 is: 123,772.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,311.57 : 222,608.62 = 89,690.97 : x
  2. Step 2: Convert to fraction form
    161,311.57/222,608.62 = 89,690.97/x
  3. Step 3: Cross multiply
    161,311.57x = 222,608.62 × 89,690.97
  4. Step 4: Simplify right side
    161,311.57x = 19,965,981,999.15
  5. Step 5: Solve for x
    x = 19,965,981,999.15/161,311.57
  6. Step 6: Final answer
    x = 123,772.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.