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Finding the Fourth Proportional to 158,229.34, 218,362.03 and 86,609.41

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Solution

The fourth proportional to 158,229.34, 218,362.03 and 86,609.41 is: 119,524.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,229.34 : 218,362.03 = 86,609.41 : x
  2. Step 2: Convert to fraction form
    158,229.34/218,362.03 = 86,609.41/x
  3. Step 3: Cross multiply
    158,229.34x = 218,362.03 × 86,609.41
  4. Step 4: Simplify right side
    158,229.34x = 18,912,206,584.70
  5. Step 5: Solve for x
    x = 18,912,206,584.70/158,229.34
  6. Step 6: Final answer
    x = 119,524.02

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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.