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Finding the Fourth Proportional to 161,341.62, 222,648.39 and 89,721.02

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Solution

The fourth proportional to 161,341.62, 222,648.39 and 89,721.02 is: 123,813.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,341.62 : 222,648.39 = 89,721.02 : x
  2. Step 2: Convert to fraction form
    161,341.62/222,648.39 = 89,721.02/x
  3. Step 3: Cross multiply
    161,341.62x = 222,648.39 × 89,721.02
  4. Step 4: Simplify right side
    161,341.62x = 19,976,239,538.92
  5. Step 5: Solve for x
    x = 19,976,239,538.92/161,341.62
  6. Step 6: Final answer
    x = 123,813.31

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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.