Home / 120,821.99-166,729.70-67,110.43

Finding the Fourth Proportional to 120,821.99, 166,729.70 and 67,110.43

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Solution

The fourth proportional to 120,821.99, 166,729.70 and 67,110.43 is: 92,609.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,821.99 : 166,729.70 = 67,110.43 : x
  2. Step 2: Convert to fraction form
    120,821.99/166,729.70 = 67,110.43/x
  3. Step 3: Cross multiply
    120,821.99x = 166,729.70 × 67,110.43
  4. Step 4: Simplify right side
    120,821.99x = 11,189,301,611.72
  5. Step 5: Solve for x
    x = 11,189,301,611.72/120,821.99
  6. Step 6: Final answer
    x = 92,609.81

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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.