Home / 126,003.40-188,567.70-115,505.80

Finding the Fourth Proportional to 126,003.40, 188,567.70 and 115,505.80

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Solution

The fourth proportional to 126,003.40, 188,567.70 and 115,505.80 is: 172,857.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,003.40 : 188,567.70 = 115,505.80 : x
  2. Step 2: Convert to fraction form
    126,003.40/188,567.70 = 115,505.80/x
  3. Step 3: Cross multiply
    126,003.40x = 188,567.70 × 115,505.80
  4. Step 4: Simplify right side
    126,003.40x = 21,780,663,042.66
  5. Step 5: Solve for x
    x = 21,780,663,042.66/126,003.40
  6. Step 6: Final answer
    x = 172,857.74

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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.