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Finding the Fourth Proportional to 120,364.89, 166,101.51 and 66,648.75

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Solution

The fourth proportional to 120,364.89, 166,101.51 and 66,648.75 is: 91,974.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,364.89 : 166,101.51 = 66,648.75 : x
  2. Step 2: Convert to fraction form
    120,364.89/166,101.51 = 66,648.75/x
  3. Step 3: Cross multiply
    120,364.89x = 166,101.51 × 66,648.75
  4. Step 4: Simplify right side
    120,364.89x = 11,070,458,446.93
  5. Step 5: Solve for x
    x = 11,070,458,446.93/120,364.89
  6. Step 6: Final answer
    x = 91,974.15

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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.