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Finding the Fourth Proportional to 120,697.89, 166,563.18 and 66,982.95

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Solution

The fourth proportional to 120,697.89, 166,563.18 and 66,982.95 is: 92,436.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,697.89 : 166,563.18 = 66,982.95 : x
  2. Step 2: Convert to fraction form
    120,697.89/166,563.18 = 66,982.95/x
  3. Step 3: Cross multiply
    120,697.89x = 166,563.18 × 66,982.95
  4. Step 4: Simplify right side
    120,697.89x = 11,156,893,157.78
  5. Step 5: Solve for x
    x = 11,156,893,157.78/120,697.89
  6. Step 6: Final answer
    x = 92,436.52

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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.