Home / 126,104.55-188,763.15-90,505.65

Finding the Fourth Proportional to 126,104.55, 188,763.15 and 90,505.65

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Solution

The fourth proportional to 126,104.55, 188,763.15 and 90,505.65 is: 135,475.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,104.55 : 188,763.15 = 90,505.65 : x
  2. Step 2: Convert to fraction form
    126,104.55/188,763.15 = 90,505.65/x
  3. Step 3: Cross multiply
    126,104.55x = 188,763.15 × 90,505.65
  4. Step 4: Simplify right side
    126,104.55x = 17,084,131,586.80
  5. Step 5: Solve for x
    x = 17,084,131,586.80/126,104.55
  6. Step 6: Final answer
    x = 135,475.93

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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.