Home / 126,139.54-188,995.20-76,114.52

Finding the Fourth Proportional to 126,139.54, 188,995.20 and 76,114.52

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Solution

The fourth proportional to 126,139.54, 188,995.20 and 76,114.52 is: 114,042.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,139.54 : 188,995.20 = 76,114.52 : x
  2. Step 2: Convert to fraction form
    126,139.54/188,995.20 = 76,114.52/x
  3. Step 3: Cross multiply
    126,139.54x = 188,995.20 × 76,114.52
  4. Step 4: Simplify right side
    126,139.54x = 14,385,278,930.30
  5. Step 5: Solve for x
    x = 14,385,278,930.30/126,139.54
  6. Step 6: Final answer
    x = 114,042.58

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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.