Home / 210.62-290.41-136.91

Finding the Fourth Proportional to 210.62, 290.41 and 136.91

Calculator

Solution

The fourth proportional to 210.62, 290.41 and 136.91 is: 188.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    210.62 : 290.41 = 136.91 : x
  2. Step 2: Convert to fraction form
    210.62/290.41 = 136.91/x
  3. Step 3: Cross multiply
    210.62x = 290.41 × 136.91
  4. Step 4: Simplify right side
    210.62x = 39,760.42
  5. Step 5: Solve for x
    x = 39,760.42/210.62
  6. Step 6: Final answer
    x = 188.78

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.