Home / 161,082.12-222,404.52-100,679.90

Finding the Fourth Proportional to 161,082.12, 222,404.52 and 100,679.90

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Solution

The fourth proportional to 161,082.12, 222,404.52 and 100,679.90 is: 139,007.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,082.12 : 222,404.52 = 100,679.90 : x
  2. Step 2: Convert to fraction form
    161,082.12/222,404.52 = 100,679.90/x
  3. Step 3: Cross multiply
    161,082.12x = 222,404.52 × 100,679.90
  4. Step 4: Simplify right side
    161,082.12x = 22,391,663,721.13
  5. Step 5: Solve for x
    x = 22,391,663,721.13/161,082.12
  6. Step 6: Final answer
    x = 139,007.75

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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.