Home / 126,218.92-189,338.80-90,844.88

Finding the Fourth Proportional to 126,218.92, 189,338.80 and 90,844.88

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Solution

The fourth proportional to 126,218.92, 189,338.80 and 90,844.88 is: 136,274.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,218.92 : 189,338.80 = 90,844.88 : x
  2. Step 2: Convert to fraction form
    126,218.92/189,338.80 = 90,844.88/x
  3. Step 3: Cross multiply
    126,218.92x = 189,338.80 × 90,844.88
  4. Step 4: Simplify right side
    126,218.92x = 17,200,459,391.54
  5. Step 5: Solve for x
    x = 17,200,459,391.54/126,218.92
  6. Step 6: Final answer
    x = 136,274.81

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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.