Home / 126,137.40-188,991.99-76,112.39

Finding the Fourth Proportional to 126,137.40, 188,991.99 and 76,112.39

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Solution

The fourth proportional to 126,137.40, 188,991.99 and 76,112.39 is: 114,039.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,137.40 : 188,991.99 = 76,112.39 : x
  2. Step 2: Convert to fraction form
    126,137.40/188,991.99 = 76,112.39/x
  3. Step 3: Cross multiply
    126,137.40x = 188,991.99 × 76,112.39
  4. Step 4: Simplify right side
    126,137.40x = 14,384,631,104.80
  5. Step 5: Solve for x
    x = 14,384,631,104.80/126,137.40
  6. Step 6: Final answer
    x = 114,039.38

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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.