Home / 120,530.22-166,331.70-66,815.10

Finding the Fourth Proportional to 120,530.22, 166,331.70 and 66,815.10

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Solution

The fourth proportional to 120,530.22, 166,331.70 and 66,815.10 is: 92,204.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,530.22 : 166,331.70 = 66,815.10 : x
  2. Step 2: Convert to fraction form
    120,530.22/166,331.70 = 66,815.10/x
  3. Step 3: Cross multiply
    120,530.22x = 166,331.70 × 66,815.10
  4. Step 4: Simplify right side
    120,530.22x = 11,113,469,168.67
  5. Step 5: Solve for x
    x = 11,113,469,168.67/120,530.22
  6. Step 6: Final answer
    x = 92,204.84

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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.