Home / 120,588.20-166,413.12-66,873.86

Finding the Fourth Proportional to 120,588.20, 166,413.12 and 66,873.86

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Solution

The fourth proportional to 120,588.20, 166,413.12 and 66,873.86 is: 92,286.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,588.20 : 166,413.12 = 66,873.86 : x
  2. Step 2: Convert to fraction form
    120,588.20/166,413.12 = 66,873.86/x
  3. Step 3: Cross multiply
    120,588.20x = 166,413.12 × 66,873.86
  4. Step 4: Simplify right side
    120,588.20x = 11,128,687,689.04
  5. Step 5: Solve for x
    x = 11,128,687,689.04/120,588.20
  6. Step 6: Final answer
    x = 92,286.71

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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.