Home / 115,696.85-159,660.59-64,708.97

Finding the Fourth Proportional to 115,696.85, 159,660.59 and 64,708.97

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Solution

The fourth proportional to 115,696.85, 159,660.59 and 64,708.97 is: 89,297.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,696.85 : 159,660.59 = 64,708.97 : x
  2. Step 2: Convert to fraction form
    115,696.85/159,660.59 = 64,708.97/x
  3. Step 3: Cross multiply
    115,696.85x = 159,660.59 × 64,708.97
  4. Step 4: Simplify right side
    115,696.85x = 10,331,471,206.64
  5. Step 5: Solve for x
    x = 10,331,471,206.64/115,696.85
  6. Step 6: Final answer
    x = 89,297.78

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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.