Home / 128,958.23-193,449.65-50,078.61

Finding the Fourth Proportional to 128,958.23, 193,449.65 and 50,078.61

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Solution

The fourth proportional to 128,958.23, 193,449.65 and 50,078.61 is: 75,122.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,958.23 : 193,449.65 = 50,078.61 : x
  2. Step 2: Convert to fraction form
    128,958.23/193,449.65 = 50,078.61/x
  3. Step 3: Cross multiply
    128,958.23x = 193,449.65 × 50,078.61
  4. Step 4: Simplify right side
    128,958.23x = 9,687,689,326.59
  5. Step 5: Solve for x
    x = 9,687,689,326.59/128,958.23
  6. Step 6: Final answer
    x = 75,122.69

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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.