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Finding the Fourth Proportional to 161,379.87, 222,715.35 and 89,766.56

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Solution

The fourth proportional to 161,379.87, 222,715.35 and 89,766.56 is: 123,884.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,379.87 : 222,715.35 = 89,766.56 : x
  2. Step 2: Convert to fraction form
    161,379.87/222,715.35 = 89,766.56/x
  3. Step 3: Cross multiply
    161,379.87x = 222,715.35 × 89,766.56
  4. Step 4: Simplify right side
    161,379.87x = 19,992,389,715.12
  5. Step 5: Solve for x
    x = 19,992,389,715.12/161,379.87
  6. Step 6: Final answer
    x = 123,884.04

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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.