Home / 120,440.76-166,208.13-66,729.12

Finding the Fourth Proportional to 120,440.76, 166,208.13 and 66,729.12

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Solution

The fourth proportional to 120,440.76, 166,208.13 and 66,729.12 is: 92,086.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,440.76 : 166,208.13 = 66,729.12 : x
  2. Step 2: Convert to fraction form
    120,440.76/166,208.13 = 66,729.12/x
  3. Step 3: Cross multiply
    120,440.76x = 166,208.13 × 66,729.12
  4. Step 4: Simplify right side
    120,440.76x = 11,090,922,251.75
  5. Step 5: Solve for x
    x = 11,090,922,251.75/120,440.76
  6. Step 6: Final answer
    x = 92,086.12

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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.