Home / 140.23-210.05-71.54

Finding the Fourth Proportional to 140.23, 210.05 and 71.54

Calculator

Solution

The fourth proportional to 140.23, 210.05 and 71.54 is: 107.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    140.23 : 210.05 = 71.54 : x
  2. Step 2: Convert to fraction form
    140.23/210.05 = 71.54/x
  3. Step 3: Cross multiply
    140.23x = 210.05 × 71.54
  4. Step 4: Simplify right side
    140.23x = 15,026.62
  5. Step 5: Solve for x
    x = 15,026.62/140.23
  6. Step 6: Final answer
    x = 107.16

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.