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Finding the Fourth Proportional to 120,860.55, 166,790.49 and 67,147.83

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Solution

The fourth proportional to 120,860.55, 166,790.49 and 67,147.83 is: 92,665.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,860.55 : 166,790.49 = 67,147.83 : x
  2. Step 2: Convert to fraction form
    120,860.55/166,790.49 = 67,147.83/x
  3. Step 3: Cross multiply
    120,860.55x = 166,790.49 × 67,147.83
  4. Step 4: Simplify right side
    120,860.55x = 11,199,619,468.14
  5. Step 5: Solve for x
    x = 11,199,619,468.14/120,860.55
  6. Step 6: Final answer
    x = 92,665.63

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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.