Home / 77.99-116.73-67.43

Finding the Fourth Proportional to 77.99, 116.73 and 67.43

Calculator

Solution

The fourth proportional to 77.99, 116.73 and 67.43 is: 100.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    77.99 : 116.73 = 67.43 : x
  2. Step 2: Convert to fraction form
    77.99/116.73 = 67.43/x
  3. Step 3: Cross multiply
    77.99x = 116.73 × 67.43
  4. Step 4: Simplify right side
    77.99x = 7,871.10
  5. Step 5: Solve for x
    x = 7,871.10/77.99
  6. Step 6: Final answer
    x = 100.92

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.