Home / 81.03-121.47-60.68

Finding the Fourth Proportional to 81.03, 121.47 and 60.68

Calculator

Solution

The fourth proportional to 81.03, 121.47 and 60.68 is: 90.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    81.03 : 121.47 = 60.68 : x
  2. Step 2: Convert to fraction form
    81.03/121.47 = 60.68/x
  3. Step 3: Cross multiply
    81.03x = 121.47 × 60.68
  4. Step 4: Simplify right side
    81.03x = 7,370.88
  5. Step 5: Solve for x
    x = 7,370.88/81.03
  6. Step 6: Final answer
    x = 90.96

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.