Home / 120,618.21-166,447.41-66,902.15

Finding the Fourth Proportional to 120,618.21, 166,447.41 and 66,902.15

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Solution

The fourth proportional to 120,618.21, 166,447.41 and 66,902.15 is: 92,321.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,618.21 : 166,447.41 = 66,902.15 : x
  2. Step 2: Convert to fraction form
    120,618.21/166,447.41 = 66,902.15/x
  3. Step 3: Cross multiply
    120,618.21x = 166,447.41 × 66,902.15
  4. Step 4: Simplify right side
    120,618.21x = 11,135,689,756.17
  5. Step 5: Solve for x
    x = 11,135,689,756.17/120,618.21
  6. Step 6: Final answer
    x = 92,321.79

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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.