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Finding the Fourth Proportional to 128,989.83, 193,470.15 and 44,734.44

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Solution

The fourth proportional to 128,989.83, 193,470.15 and 44,734.44 is: 67,096.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,989.83 : 193,470.15 = 44,734.44 : x
  2. Step 2: Convert to fraction form
    128,989.83/193,470.15 = 44,734.44/x
  3. Step 3: Cross multiply
    128,989.83x = 193,470.15 × 44,734.44
  4. Step 4: Simplify right side
    128,989.83x = 8,654,778,816.97
  5. Step 5: Solve for x
    x = 8,654,778,816.97/128,989.83
  6. Step 6: Final answer
    x = 67,096.60

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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.