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Finding the Fourth Proportional to 120,738.01, 166,610.12 and 67,018.80

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Solution

The fourth proportional to 120,738.01, 166,610.12 and 67,018.80 is: 92,481.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,738.01 : 166,610.12 = 67,018.80 : x
  2. Step 2: Convert to fraction form
    120,738.01/166,610.12 = 67,018.80/x
  3. Step 3: Cross multiply
    120,738.01x = 166,610.12 × 67,018.80
  4. Step 4: Simplify right side
    120,738.01x = 11,166,010,310.26
  5. Step 5: Solve for x
    x = 11,166,010,310.26/120,738.01
  6. Step 6: Final answer
    x = 92,481.32

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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.