Home / 136.03-203.91-81.76

Finding the Fourth Proportional to 136.03, 203.91 and 81.76

Calculator

Solution

The fourth proportional to 136.03, 203.91 and 81.76 is: 122.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    136.03 : 203.91 = 81.76 : x
  2. Step 2: Convert to fraction form
    136.03/203.91 = 81.76/x
  3. Step 3: Cross multiply
    136.03x = 203.91 × 81.76
  4. Step 4: Simplify right side
    136.03x = 16,671.68
  5. Step 5: Solve for x
    x = 16,671.68/136.03
  6. Step 6: Final answer
    x = 122.56

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.