Home / 115,945.97-158,806.58-109,137.11

Finding the Fourth Proportional to 115,945.97, 158,806.58 and 109,137.11

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Solution

The fourth proportional to 115,945.97, 158,806.58 and 109,137.11 is: 149,480.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,945.97 : 158,806.58 = 109,137.11 : x
  2. Step 2: Convert to fraction form
    115,945.97/158,806.58 = 109,137.11/x
  3. Step 3: Cross multiply
    115,945.97x = 158,806.58 × 109,137.11
  4. Step 4: Simplify right side
    115,945.97x = 17,331,689,850.47
  5. Step 5: Solve for x
    x = 17,331,689,850.47/115,945.97
  6. Step 6: Final answer
    x = 149,480.75

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.