Home / 142.32-196.40-84.09

Finding the Fourth Proportional to 142.32, 196.40 and 84.09

Calculator

Solution

The fourth proportional to 142.32, 196.40 and 84.09 is: 116.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    142.32 : 196.40 = 84.09 : x
  2. Step 2: Convert to fraction form
    142.32/196.40 = 84.09/x
  3. Step 3: Cross multiply
    142.32x = 196.40 × 84.09
  4. Step 4: Simplify right side
    142.32x = 16,514.86
  5. Step 5: Solve for x
    x = 16,514.86/142.32
  6. Step 6: Final answer
    x = 116.04

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.