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Finding the Fourth Proportional to 128,966.60, 193,400.80 and 50,062.48

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Solution

The fourth proportional to 128,966.60, 193,400.80 and 50,062.48 is: 75,074.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,966.60 : 193,400.80 = 50,062.48 : x
  2. Step 2: Convert to fraction form
    128,966.60/193,400.80 = 50,062.48/x
  3. Step 3: Cross multiply
    128,966.60x = 193,400.80 × 50,062.48
  4. Step 4: Simplify right side
    128,966.60x = 9,682,123,073.33
  5. Step 5: Solve for x
    x = 9,682,123,073.33/128,966.60
  6. Step 6: Final answer
    x = 75,074.65

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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.