Home / 149,315.78-206,040.83-91,945.91

Finding the Fourth Proportional to 149,315.78, 206,040.83 and 91,945.91

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Solution

The fourth proportional to 149,315.78, 206,040.83 and 91,945.91 is: 126,876.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,315.78 : 206,040.83 = 91,945.91 : x
  2. Step 2: Convert to fraction form
    149,315.78/206,040.83 = 91,945.91/x
  3. Step 3: Cross multiply
    149,315.78x = 206,040.83 × 91,945.91
  4. Step 4: Simplify right side
    149,315.78x = 18,944,610,121.57
  5. Step 5: Solve for x
    x = 18,944,610,121.57/149,315.78
  6. Step 6: Final answer
    x = 126,876.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.