Home / 120,800.20-166,713.78-67,090.12

Finding the Fourth Proportional to 120,800.20, 166,713.78 and 67,090.12

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Solution

The fourth proportional to 120,800.20, 166,713.78 and 67,090.12 is: 92,589.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,800.20 : 166,713.78 = 67,090.12 : x
  2. Step 2: Convert to fraction form
    120,800.20/166,713.78 = 67,090.12/x
  3. Step 3: Cross multiply
    120,800.20x = 166,713.78 × 67,090.12
  4. Step 4: Simplify right side
    120,800.20x = 11,184,847,505.85
  5. Step 5: Solve for x
    x = 11,184,847,505.85/120,800.20
  6. Step 6: Final answer
    x = 92,589.64

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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.