Home / 126,069.35-188,976.44-81,724.28

Finding the Fourth Proportional to 126,069.35, 188,976.44 and 81,724.28

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Solution

The fourth proportional to 126,069.35, 188,976.44 and 81,724.28 is: 122,503.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,069.35 : 188,976.44 = 81,724.28 : x
  2. Step 2: Convert to fraction form
    126,069.35/188,976.44 = 81,724.28/x
  3. Step 3: Cross multiply
    126,069.35x = 188,976.44 × 81,724.28
  4. Step 4: Simplify right side
    126,069.35x = 15,443,962,755.39
  5. Step 5: Solve for x
    x = 15,443,962,755.39/126,069.35
  6. Step 6: Final answer
    x = 122,503.71

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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.