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Finding the Fourth Proportional to 120,958.08, 166,912.48 and 67,238.88

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Solution

The fourth proportional to 120,958.08, 166,912.48 and 67,238.88 is: 92,784.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,958.08 : 166,912.48 = 67,238.88 : x
  2. Step 2: Convert to fraction form
    120,958.08/166,912.48 = 67,238.88/x
  3. Step 3: Cross multiply
    120,958.08x = 166,912.48 × 67,238.88
  4. Step 4: Simplify right side
    120,958.08x = 11,223,008,213.22
  5. Step 5: Solve for x
    x = 11,223,008,213.22/120,958.08
  6. Step 6: Final answer
    x = 92,784.28

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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.