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Finding the Fourth Proportional to 159,425.22, 220,016.78 and 87,805.23

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Solution

The fourth proportional to 159,425.22, 220,016.78 and 87,805.23 is: 121,176.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,425.22 : 220,016.78 = 87,805.23 : x
  2. Step 2: Convert to fraction form
    159,425.22/220,016.78 = 87,805.23/x
  3. Step 3: Cross multiply
    159,425.22x = 220,016.78 × 87,805.23
  4. Step 4: Simplify right side
    159,425.22x = 19,318,623,971.76
  5. Step 5: Solve for x
    x = 19,318,623,971.76/159,425.22
  6. Step 6: Final answer
    x = 121,176.71

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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.