Home / 138,324.73-190,976.42-112,891.85

Finding the Fourth Proportional to 138,324.73, 190,976.42 and 112,891.85

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Solution

The fourth proportional to 138,324.73, 190,976.42 and 112,891.85 is: 155,862.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,324.73 : 190,976.42 = 112,891.85 : x
  2. Step 2: Convert to fraction form
    138,324.73/190,976.42 = 112,891.85/x
  3. Step 3: Cross multiply
    138,324.73x = 190,976.42 × 112,891.85
  4. Step 4: Simplify right side
    138,324.73x = 21,559,681,273.16
  5. Step 5: Solve for x
    x = 21,559,681,273.16/138,324.73
  6. Step 6: Final answer
    x = 155,862.81

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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.