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Finding the Fourth Proportional to 161,070, 222,279.60 and 89,456.64

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Solution

The fourth proportional to 161,070, 222,279.60 and 89,456.64 is: 123,451.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,070 : 222,279.60 = 89,456.64 : x
  2. Step 2: Convert to fraction form
    161,070/222,279.60 = 89,456.64/x
  3. Step 3: Cross multiply
    161,070x = 222,279.60 × 89,456.64
  4. Step 4: Simplify right side
    161,070x = 19,884,386,156.54
  5. Step 5: Solve for x
    x = 19,884,386,156.54/161,070
  6. Step 6: Final answer
    x = 123,451.83

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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.