Home / 140.10-209.96-137.68

Finding the Fourth Proportional to 140.10, 209.96 and 137.68

Calculator

Solution

The fourth proportional to 140.10, 209.96 and 137.68 is: 206.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    140.10 : 209.96 = 137.68 : x
  2. Step 2: Convert to fraction form
    140.10/209.96 = 137.68/x
  3. Step 3: Cross multiply
    140.10x = 209.96 × 137.68
  4. Step 4: Simplify right side
    140.10x = 28,907.29
  5. Step 5: Solve for x
    x = 28,907.29/140.10
  6. Step 6: Final answer
    x = 206.33

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.