Home / 126,103.55-188,761.66-90,504.65

Finding the Fourth Proportional to 126,103.55, 188,761.66 and 90,504.65

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Solution

The fourth proportional to 126,103.55, 188,761.66 and 90,504.65 is: 135,474.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,103.55 : 188,761.66 = 90,504.65 : x
  2. Step 2: Convert to fraction form
    126,103.55/188,761.66 = 90,504.65/x
  3. Step 3: Cross multiply
    126,103.55x = 188,761.66 × 90,504.65
  4. Step 4: Simplify right side
    126,103.55x = 17,083,808,217.36
  5. Step 5: Solve for x
    x = 17,083,808,217.36/126,103.55
  6. Step 6: Final answer
    x = 135,474.45

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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.