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Finding the Fourth Proportional to 120,660.44, 166,511.43 and 66,945.33

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Solution

The fourth proportional to 120,660.44, 166,511.43 and 66,945.33 is: 92,384.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,660.44 : 166,511.43 = 66,945.33 : x
  2. Step 2: Convert to fraction form
    120,660.44/166,511.43 = 66,945.33/x
  3. Step 3: Cross multiply
    120,660.44x = 166,511.43 × 66,945.33
  4. Step 4: Simplify right side
    120,660.44x = 11,147,162,630.12
  5. Step 5: Solve for x
    x = 11,147,162,630.12/120,660.44
  6. Step 6: Final answer
    x = 92,384.57

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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.