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Finding the Fourth Proportional to 148,188.90, 204,540.21 and 91,568.28

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Solution

The fourth proportional to 148,188.90, 204,540.21 and 91,568.28 is: 126,388.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,188.90 : 204,540.21 = 91,568.28 : x
  2. Step 2: Convert to fraction form
    148,188.90/204,540.21 = 91,568.28/x
  3. Step 3: Cross multiply
    148,188.90x = 204,540.21 × 91,568.28
  4. Step 4: Simplify right side
    148,188.90x = 18,729,395,220.54
  5. Step 5: Solve for x
    x = 18,729,395,220.54/148,188.90
  6. Step 6: Final answer
    x = 126,388.65

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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.