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Finding the Fourth Proportional to 120,908.78, 166,854.46 and 67,193.63

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Solution

The fourth proportional to 120,908.78, 166,854.46 and 67,193.63 is: 92,727.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,908.78 : 166,854.46 = 67,193.63 : x
  2. Step 2: Convert to fraction form
    120,908.78/166,854.46 = 67,193.63/x
  3. Step 3: Cross multiply
    120,908.78x = 166,854.46 × 67,193.63
  4. Step 4: Simplify right side
    120,908.78x = 11,211,556,849.09
  5. Step 5: Solve for x
    x = 11,211,556,849.09/120,908.78
  6. Step 6: Final answer
    x = 92,727.40

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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.