Home / 149,002.94-205,622.96-81,019.85

Finding the Fourth Proportional to 149,002.94, 205,622.96 and 81,019.85

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Solution

The fourth proportional to 149,002.94, 205,622.96 and 81,019.85 is: 111,806.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,002.94 : 205,622.96 = 81,019.85 : x
  2. Step 2: Convert to fraction form
    149,002.94/205,622.96 = 81,019.85/x
  3. Step 3: Cross multiply
    149,002.94x = 205,622.96 × 81,019.85
  4. Step 4: Simplify right side
    149,002.94x = 16,659,539,942.54
  5. Step 5: Solve for x
    x = 16,659,539,942.54/149,002.94
  6. Step 6: Final answer
    x = 111,806.78

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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.