Home / 82.36-123.44-67.92

Finding the Fourth Proportional to 82.36, 123.44 and 67.92

Calculator

Solution

The fourth proportional to 82.36, 123.44 and 67.92 is: 101.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    82.36 : 123.44 = 67.92 : x
  2. Step 2: Convert to fraction form
    82.36/123.44 = 67.92/x
  3. Step 3: Cross multiply
    82.36x = 123.44 × 67.92
  4. Step 4: Simplify right side
    82.36x = 8,384.04
  5. Step 5: Solve for x
    x = 8,384.04/82.36
  6. Step 6: Final answer
    x = 101.80

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.