Home / 126,198.17-189,169.45-81,853.07

Finding the Fourth Proportional to 126,198.17, 189,169.45 and 81,853.07

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Solution

The fourth proportional to 126,198.17, 189,169.45 and 81,853.07 is: 122,696.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,198.17 : 189,169.45 = 81,853.07 : x
  2. Step 2: Convert to fraction form
    126,198.17/189,169.45 = 81,853.07/x
  3. Step 3: Cross multiply
    126,198.17x = 189,169.45 × 81,853.07
  4. Step 4: Simplify right side
    126,198.17x = 15,484,100,232.71
  5. Step 5: Solve for x
    x = 15,484,100,232.71/126,198.17
  6. Step 6: Final answer
    x = 122,696.71

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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.