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Finding the Fourth Proportional to 128,080.44, 192,129.89 and 49,194.66

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Solution

The fourth proportional to 128,080.44, 192,129.89 and 49,194.66 is: 73,795.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,080.44 : 192,129.89 = 49,194.66 : x
  2. Step 2: Convert to fraction form
    128,080.44/192,129.89 = 49,194.66/x
  3. Step 3: Cross multiply
    128,080.44x = 192,129.89 × 49,194.66
  4. Step 4: Simplify right side
    128,080.44x = 9,451,764,368.41
  5. Step 5: Solve for x
    x = 9,451,764,368.41/128,080.44
  6. Step 6: Final answer
    x = 73,795.53

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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.