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Finding the Fourth Proportional to 120,651.57, 166,484.03 and 66,922.65

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Solution

The fourth proportional to 120,651.57, 166,484.03 and 66,922.65 is: 92,344.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,651.57 : 166,484.03 = 66,922.65 : x
  2. Step 2: Convert to fraction form
    120,651.57/166,484.03 = 66,922.65/x
  3. Step 3: Cross multiply
    120,651.57x = 166,484.03 × 66,922.65
  4. Step 4: Simplify right side
    120,651.57x = 11,141,552,135.67
  5. Step 5: Solve for x
    x = 11,141,552,135.67/120,651.57
  6. Step 6: Final answer
    x = 92,344.86

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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.