Home / 120,905.40-166,839.90-67,189.56

Finding the Fourth Proportional to 120,905.40, 166,839.90 and 67,189.56

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Solution

The fourth proportional to 120,905.40, 166,839.90 and 67,189.56 is: 92,716.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,905.40 : 166,839.90 = 67,189.56 : x
  2. Step 2: Convert to fraction form
    120,905.40/166,839.90 = 67,189.56/x
  3. Step 3: Cross multiply
    120,905.40x = 166,839.90 × 67,189.56
  4. Step 4: Simplify right side
    120,905.40x = 11,209,899,471.44
  5. Step 5: Solve for x
    x = 11,209,899,471.44/120,905.40
  6. Step 6: Final answer
    x = 92,716.28

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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.