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Finding the Fourth Proportional to 163,144.37, 225,119.54 and 90,546.90

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Solution

The fourth proportional to 163,144.37, 225,119.54 and 90,546.90 is: 124,943.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,144.37 : 225,119.54 = 90,546.90 : x
  2. Step 2: Convert to fraction form
    163,144.37/225,119.54 = 90,546.90/x
  3. Step 3: Cross multiply
    163,144.37x = 225,119.54 × 90,546.90
  4. Step 4: Simplify right side
    163,144.37x = 20,383,876,476.43
  5. Step 5: Solve for x
    x = 20,383,876,476.43/163,144.37
  6. Step 6: Final answer
    x = 124,943.79

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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.