Home / 136.97-188.96-87.84

Finding the Fourth Proportional to 136.97, 188.96 and 87.84

Calculator

Solution

The fourth proportional to 136.97, 188.96 and 87.84 is: 121.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    136.97 : 188.96 = 87.84 : x
  2. Step 2: Convert to fraction form
    136.97/188.96 = 87.84/x
  3. Step 3: Cross multiply
    136.97x = 188.96 × 87.84
  4. Step 4: Simplify right side
    136.97x = 16,598.25
  5. Step 5: Solve for x
    x = 16,598.25/136.97
  6. Step 6: Final answer
    x = 121.18

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.