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Finding the Fourth Proportional to 161,249.58, 222,532.65 and 89,631

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Solution

The fourth proportional to 161,249.58, 222,532.65 and 89,631 is: 123,695.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,249.58 : 222,532.65 = 89,631 : x
  2. Step 2: Convert to fraction form
    161,249.58/222,532.65 = 89,631/x
  3. Step 3: Cross multiply
    161,249.58x = 222,532.65 × 89,631
  4. Step 4: Simplify right side
    161,249.58x = 19,945,823,952.15
  5. Step 5: Solve for x
    x = 19,945,823,952.15/161,249.58
  6. Step 6: Final answer
    x = 123,695.35

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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.