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Finding the Fourth Proportional to 159,425.25, 220,016.82 and 87,805.25

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Solution

The fourth proportional to 159,425.25, 220,016.82 and 87,805.25 is: 121,176.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,425.25 : 220,016.82 = 87,805.25 : x
  2. Step 2: Convert to fraction form
    159,425.25/220,016.82 = 87,805.25/x
  3. Step 3: Cross multiply
    159,425.25x = 220,016.82 × 87,805.25
  4. Step 4: Simplify right side
    159,425.25x = 19,318,631,938.55
  5. Step 5: Solve for x
    x = 19,318,631,938.55/159,425.25
  6. Step 6: Final answer
    x = 121,176.74

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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.