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Finding the Fourth Proportional to 158,481.80, 218,704.44 and 85,886.70

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Solution

The fourth proportional to 158,481.80, 218,704.44 and 85,886.70 is: 118,523.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,481.80 : 218,704.44 = 85,886.70 : x
  2. Step 2: Convert to fraction form
    158,481.80/218,704.44 = 85,886.70/x
  3. Step 3: Cross multiply
    158,481.80x = 218,704.44 × 85,886.70
  4. Step 4: Simplify right side
    158,481.80x = 18,783,802,626.95
  5. Step 5: Solve for x
    x = 18,783,802,626.95/158,481.80
  6. Step 6: Final answer
    x = 118,523.41

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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.