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Finding the Fourth Proportional to 185,894.98, 278,685.72 and 80,634.70

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Solution

The fourth proportional to 185,894.98, 278,685.72 and 80,634.70 is: 120,884.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,894.98 : 278,685.72 = 80,634.70 : x
  2. Step 2: Convert to fraction form
    185,894.98/278,685.72 = 80,634.70/x
  3. Step 3: Cross multiply
    185,894.98x = 278,685.72 × 80,634.70
  4. Step 4: Simplify right side
    185,894.98x = 22,471,739,426.48
  5. Step 5: Solve for x
    x = 22,471,739,426.48/185,894.98
  6. Step 6: Final answer
    x = 120,884.06

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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.