Home / 136.21-188.03-92.57

Finding the Fourth Proportional to 136.21, 188.03 and 92.57

Calculator

Solution

The fourth proportional to 136.21, 188.03 and 92.57 is: 127.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    136.21 : 188.03 = 92.57 : x
  2. Step 2: Convert to fraction form
    136.21/188.03 = 92.57/x
  3. Step 3: Cross multiply
    136.21x = 188.03 × 92.57
  4. Step 4: Simplify right side
    136.21x = 17,405.94
  5. Step 5: Solve for x
    x = 17,405.94/136.21
  6. Step 6: Final answer
    x = 127.79

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.