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Finding the Fourth Proportional to 109,201.64, 150,660.61 and 66,194.96

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Solution

The fourth proportional to 109,201.64, 150,660.61 and 66,194.96 is: 91,326.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,201.64 : 150,660.61 = 66,194.96 : x
  2. Step 2: Convert to fraction form
    109,201.64/150,660.61 = 66,194.96/x
  3. Step 3: Cross multiply
    109,201.64x = 150,660.61 × 66,194.96
  4. Step 4: Simplify right side
    109,201.64x = 9,972,972,133.74
  5. Step 5: Solve for x
    x = 9,972,972,133.74/109,201.64
  6. Step 6: Final answer
    x = 91,326.22

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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.