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Finding the Fourth Proportional to 173,998.80, 261,046.80 and 85,255.20

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Solution

The fourth proportional to 173,998.80, 261,046.80 and 85,255.20 is: 127,906.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,998.80 : 261,046.80 = 85,255.20 : x
  2. Step 2: Convert to fraction form
    173,998.80/261,046.80 = 85,255.20/x
  3. Step 3: Cross multiply
    173,998.80x = 261,046.80 × 85,255.20
  4. Step 4: Simplify right side
    173,998.80x = 22,255,597,143.36
  5. Step 5: Solve for x
    x = 22,255,597,143.36/173,998.80
  6. Step 6: Final answer
    x = 127,906.61

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1.5x scale

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.