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Finding the Fourth Proportional to 100,906.80, 151,381.80 and 30,793.20

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Solution

The fourth proportional to 100,906.80, 151,381.80 and 30,793.20 is: 46,196.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,906.80 : 151,381.80 = 30,793.20 : x
  2. Step 2: Convert to fraction form
    100,906.80/151,381.80 = 30,793.20/x
  3. Step 3: Cross multiply
    100,906.80x = 151,381.80 × 30,793.20
  4. Step 4: Simplify right side
    100,906.80x = 4,661,530,043.76
  5. Step 5: Solve for x
    x = 4,661,530,043.76/100,906.80
  6. Step 6: Final answer
    x = 46,196.39

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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.