Home / 134.92-186.12-120.40

Finding the Fourth Proportional to 134.92, 186.12 and 120.40

Calculator

Solution

The fourth proportional to 134.92, 186.12 and 120.40 is: 166.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    134.92 : 186.12 = 120.40 : x
  2. Step 2: Convert to fraction form
    134.92/186.12 = 120.40/x
  3. Step 3: Cross multiply
    134.92x = 186.12 × 120.40
  4. Step 4: Simplify right side
    134.92x = 22,408.85
  5. Step 5: Solve for x
    x = 22,408.85/134.92
  6. Step 6: Final answer
    x = 166.09

Related Problems

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.