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Finding the Fourth Proportional to 120,413.92, 166,163.90 and 66,695.80

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Solution

The fourth proportional to 120,413.92, 166,163.90 and 66,695.80 is: 92,036.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,413.92 : 166,163.90 = 66,695.80 : x
  2. Step 2: Convert to fraction form
    120,413.92/166,163.90 = 66,695.80/x
  3. Step 3: Cross multiply
    120,413.92x = 166,163.90 × 66,695.80
  4. Step 4: Simplify right side
    120,413.92x = 11,082,434,241.62
  5. Step 5: Solve for x
    x = 11,082,434,241.62/120,413.92
  6. Step 6: Final answer
    x = 92,036.16

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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.