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Finding the Fourth Proportional to 192,654.80, 288,982.20 and 103,862.60

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Solution

The fourth proportional to 192,654.80, 288,982.20 and 103,862.60 is: 155,793.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,654.80 : 288,982.20 = 103,862.60 : x
  2. Step 2: Convert to fraction form
    192,654.80/288,982.20 = 103,862.60/x
  3. Step 3: Cross multiply
    192,654.80x = 288,982.20 × 103,862.60
  4. Step 4: Simplify right side
    192,654.80x = 30,014,442,645.72
  5. Step 5: Solve for x
    x = 30,014,442,645.72/192,654.80
  6. Step 6: Final answer
    x = 155,793.90

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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.