Home / 126,917.76-175,121.28-76,619.52

Finding the Fourth Proportional to 126,917.76, 175,121.28 and 76,619.52

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Solution

The fourth proportional to 126,917.76, 175,121.28 and 76,619.52 is: 105,719.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,917.76 : 175,121.28 = 76,619.52 : x
  2. Step 2: Convert to fraction form
    126,917.76/175,121.28 = 76,619.52/x
  3. Step 3: Cross multiply
    126,917.76x = 175,121.28 × 76,619.52
  4. Step 4: Simplify right side
    126,917.76x = 13,417,708,415.39
  5. Step 5: Solve for x
    x = 13,417,708,415.39/126,917.76
  6. Step 6: Final answer
    x = 105,719.71

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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.