Home / 128,904.41-177,876.61-75,194.12

Finding the Fourth Proportional to 128,904.41, 177,876.61 and 75,194.12

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Solution

The fourth proportional to 128,904.41, 177,876.61 and 75,194.12 is: 103,761.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,904.41 : 177,876.61 = 75,194.12 : x
  2. Step 2: Convert to fraction form
    128,904.41/177,876.61 = 75,194.12/x
  3. Step 3: Cross multiply
    128,904.41x = 177,876.61 × 75,194.12
  4. Step 4: Simplify right side
    128,904.41x = 13,375,275,414.24
  5. Step 5: Solve for x
    x = 13,375,275,414.24/128,904.41
  6. Step 6: Final answer
    x = 103,761.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.