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Finding the Fourth Proportional to 120,679.32, 166,529.44 and 66,960.92

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Solution

The fourth proportional to 120,679.32, 166,529.44 and 66,960.92 is: 92,401.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,679.32 : 166,529.44 = 66,960.92 : x
  2. Step 2: Convert to fraction form
    120,679.32/166,529.44 = 66,960.92/x
  3. Step 3: Cross multiply
    120,679.32x = 166,529.44 × 66,960.92
  4. Step 4: Simplify right side
    120,679.32x = 11,150,964,509.48
  5. Step 5: Solve for x
    x = 11,150,964,509.48/120,679.32
  6. Step 6: Final answer
    x = 92,401.62

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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.