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Finding the Fourth Proportional to 185,889, 278,676.72 and 80,628.68

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Solution

The fourth proportional to 185,889, 278,676.72 and 80,628.68 is: 120,875.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,889 : 278,676.72 = 80,628.68 : x
  2. Step 2: Convert to fraction form
    185,889/278,676.72 = 80,628.68/x
  3. Step 3: Cross multiply
    185,889x = 278,676.72 × 80,628.68
  4. Step 4: Simplify right side
    185,889x = 22,469,336,080.33
  5. Step 5: Solve for x
    x = 22,469,336,080.33/185,889
  6. Step 6: Final answer
    x = 120,875.02

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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.