Home / 126,568.23-189,758.61-76,636.59

Finding the Fourth Proportional to 126,568.23, 189,758.61 and 76,636.59

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Solution

The fourth proportional to 126,568.23, 189,758.61 and 76,636.59 is: 114,898.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,568.23 : 189,758.61 = 76,636.59 : x
  2. Step 2: Convert to fraction form
    126,568.23/189,758.61 = 76,636.59/x
  3. Step 3: Cross multiply
    126,568.23x = 189,758.61 × 76,636.59
  4. Step 4: Simplify right side
    126,568.23x = 14,542,452,793.54
  5. Step 5: Solve for x
    x = 14,542,452,793.54/126,568.23
  6. Step 6: Final answer
    x = 114,898.13

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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.