Home / 177.36-266.18-86.12

Finding the Fourth Proportional to 177.36, 266.18 and 86.12

Calculator

Solution

The fourth proportional to 177.36, 266.18 and 86.12 is: 129.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    177.36 : 266.18 = 86.12 : x
  2. Step 2: Convert to fraction form
    177.36/266.18 = 86.12/x
  3. Step 3: Cross multiply
    177.36x = 266.18 × 86.12
  4. Step 4: Simplify right side
    177.36x = 22,921.66
  5. Step 5: Solve for x
    x = 22,921.66/177.36
  6. Step 6: Final answer
    x = 129.24

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.