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Finding the Fourth Proportional to 120,645.92, 166,494.08 and 66,930.17

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Solution

The fourth proportional to 120,645.92, 166,494.08 and 66,930.17 is: 92,365.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,645.92 : 166,494.08 = 66,930.17 : x
  2. Step 2: Convert to fraction form
    120,645.92/166,494.08 = 66,930.17/x
  3. Step 3: Cross multiply
    120,645.92x = 166,494.08 × 66,930.17
  4. Step 4: Simplify right side
    120,645.92x = 11,143,476,413.25
  5. Step 5: Solve for x
    x = 11,143,476,413.25/120,645.92
  6. Step 6: Final answer
    x = 92,365.13

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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.