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Finding the Fourth Proportional to 120,662.82, 166,514.71 and 66,947.70

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Solution

The fourth proportional to 120,662.82, 166,514.71 and 66,947.70 is: 92,387.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,662.82 : 166,514.71 = 66,947.70 : x
  2. Step 2: Convert to fraction form
    120,662.82/166,514.71 = 66,947.70/x
  3. Step 3: Cross multiply
    120,662.82x = 166,514.71 × 66,947.70
  4. Step 4: Simplify right side
    120,662.82x = 11,147,776,683.30
  5. Step 5: Solve for x
    x = 11,147,776,683.30/120,662.82
  6. Step 6: Final answer
    x = 92,387.83

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1.5x scale

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.