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Finding the Fourth Proportional to 158,377.85, 218,561.48 and 86,760.44

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Solution

The fourth proportional to 158,377.85, 218,561.48 and 86,760.44 is: 119,729.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,377.85 : 218,561.48 = 86,760.44 : x
  2. Step 2: Convert to fraction form
    158,377.85/218,561.48 = 86,760.44/x
  3. Step 3: Cross multiply
    158,377.85x = 218,561.48 × 86,760.44
  4. Step 4: Simplify right side
    158,377.85x = 18,962,489,738.05
  5. Step 5: Solve for x
    x = 18,962,489,738.05/158,377.85
  6. Step 6: Final answer
    x = 119,729.43

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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.