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Finding the Fourth Proportional to 120,836.82, 166,751.37 and 67,120.50

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Solution

The fourth proportional to 120,836.82, 166,751.37 and 67,120.50 is: 92,624.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,836.82 : 166,751.37 = 67,120.50 : x
  2. Step 2: Convert to fraction form
    120,836.82/166,751.37 = 67,120.50/x
  3. Step 3: Cross multiply
    120,836.82x = 166,751.37 × 67,120.50
  4. Step 4: Simplify right side
    120,836.82x = 11,192,435,330.09
  5. Step 5: Solve for x
    x = 11,192,435,330.09/120,836.82
  6. Step 6: Final answer
    x = 92,624.38

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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.