Home / 102.99-154.49-42.11

Finding the Fourth Proportional to 102.99, 154.49 and 42.11

Calculator

Solution

The fourth proportional to 102.99, 154.49 and 42.11 is: 63.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    102.99 : 154.49 = 42.11 : x
  2. Step 2: Convert to fraction form
    102.99/154.49 = 42.11/x
  3. Step 3: Cross multiply
    102.99x = 154.49 × 42.11
  4. Step 4: Simplify right side
    102.99x = 6,504.59
  5. Step 5: Solve for x
    x = 6,504.59/102.99
  6. Step 6: Final answer
    x = 63.16

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.