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Finding the Fourth Proportional to 120,909.67, 166,855.46 and 67,199.71

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Solution

The fourth proportional to 120,909.67, 166,855.46 and 67,199.71 is: 92,735.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,909.67 : 166,855.46 = 67,199.71 : x
  2. Step 2: Convert to fraction form
    120,909.67/166,855.46 = 67,199.71/x
  3. Step 3: Cross multiply
    120,909.67x = 166,855.46 × 67,199.71
  4. Step 4: Simplify right side
    120,909.67x = 11,212,638,187.92
  5. Step 5: Solve for x
    x = 11,212,638,187.92/120,909.67
  6. Step 6: Final answer
    x = 92,735.66

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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.