Home / 126,908.89-190,229.38-42,589.11

Finding the Fourth Proportional to 126,908.89, 190,229.38 and 42,589.11

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Solution

The fourth proportional to 126,908.89, 190,229.38 and 42,589.11 is: 63,838.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,908.89 : 190,229.38 = 42,589.11 : x
  2. Step 2: Convert to fraction form
    126,908.89/190,229.38 = 42,589.11/x
  3. Step 3: Cross multiply
    126,908.89x = 190,229.38 × 42,589.11
  4. Step 4: Simplify right side
    126,908.89x = 8,101,699,990.05
  5. Step 5: Solve for x
    x = 8,101,699,990.05/126,908.89
  6. Step 6: Final answer
    x = 63,838.71

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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.