Home / 126,963.15-175,288.86-81,719.76

Finding the Fourth Proportional to 126,963.15, 175,288.86 and 81,719.76

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Solution

The fourth proportional to 126,963.15, 175,288.86 and 81,719.76 is: 112,824.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,963.15 : 175,288.86 = 81,719.76 : x
  2. Step 2: Convert to fraction form
    126,963.15/175,288.86 = 81,719.76/x
  3. Step 3: Cross multiply
    126,963.15x = 175,288.86 × 81,719.76
  4. Step 4: Simplify right side
    126,963.15x = 14,324,563,569.87
  5. Step 5: Solve for x
    x = 14,324,563,569.87/126,963.15
  6. Step 6: Final answer
    x = 112,824.58

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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.