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Finding the Fourth Proportional to 185,987.44, 278,984.32 and 80,806.44

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Solution

The fourth proportional to 185,987.44, 278,984.32 and 80,806.44 is: 121,211.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,987.44 : 278,984.32 = 80,806.44 : x
  2. Step 2: Convert to fraction form
    185,987.44/278,984.32 = 80,806.44/x
  3. Step 3: Cross multiply
    185,987.44x = 278,984.32 × 80,806.44
  4. Step 4: Simplify right side
    185,987.44x = 22,543,729,715.02
  5. Step 5: Solve for x
    x = 22,543,729,715.02/185,987.44
  6. Step 6: Final answer
    x = 121,211.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.