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Finding the Fourth Proportional to 161,310.56, 222,605.69 and 89,689.01

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Solution

The fourth proportional to 161,310.56, 222,605.69 and 89,689.01 is: 123,769.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,310.56 : 222,605.69 = 89,689.01 : x
  2. Step 2: Convert to fraction form
    161,310.56/222,605.69 = 89,689.01/x
  3. Step 3: Cross multiply
    161,310.56x = 222,605.69 × 89,689.01
  4. Step 4: Simplify right side
    161,310.56x = 19,965,282,394.99
  5. Step 5: Solve for x
    x = 19,965,282,394.99/161,310.56
  6. Step 6: Final answer
    x = 123,769.23

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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.