Home / 108.96-163.38-91.94

Finding the Fourth Proportional to 108.96, 163.38 and 91.94

Calculator

Solution

The fourth proportional to 108.96, 163.38 and 91.94 is: 137.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    108.96 : 163.38 = 91.94 : x
  2. Step 2: Convert to fraction form
    108.96/163.38 = 91.94/x
  3. Step 3: Cross multiply
    108.96x = 163.38 × 91.94
  4. Step 4: Simplify right side
    108.96x = 15,021.16
  5. Step 5: Solve for x
    x = 15,021.16/108.96
  6. Step 6: Final answer
    x = 137.86

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.