Home / 209.82-289.56-126.96

Finding the Fourth Proportional to 209.82, 289.56 and 126.96

Calculator

Solution

The fourth proportional to 209.82, 289.56 and 126.96 is: 175.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    209.82 : 289.56 = 126.96 : x
  2. Step 2: Convert to fraction form
    209.82/289.56 = 126.96/x
  3. Step 3: Cross multiply
    209.82x = 289.56 × 126.96
  4. Step 4: Simplify right side
    209.82x = 36,762.54
  5. Step 5: Solve for x
    x = 36,762.54/209.82
  6. Step 6: Final answer
    x = 175.21

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.