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Finding the Fourth Proportional to 120,668.90, 166,520.52 and 66,952.76

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Solution

The fourth proportional to 120,668.90, 166,520.52 and 66,952.76 is: 92,393.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,668.90 : 166,520.52 = 66,952.76 : x
  2. Step 2: Convert to fraction form
    120,668.90/166,520.52 = 66,952.76/x
  3. Step 3: Cross multiply
    120,668.90x = 166,520.52 × 66,952.76
  4. Step 4: Simplify right side
    120,668.90x = 11,149,007,578.03
  5. Step 5: Solve for x
    x = 11,149,007,578.03/120,668.90
  6. Step 6: Final answer
    x = 92,393.38

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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.