Home / 125.80-188.48-120.79

Finding the Fourth Proportional to 125.80, 188.48 and 120.79

Calculator

Solution

The fourth proportional to 125.80, 188.48 and 120.79 is: 180.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    125.80 : 188.48 = 120.79 : x
  2. Step 2: Convert to fraction form
    125.80/188.48 = 120.79/x
  3. Step 3: Cross multiply
    125.80x = 188.48 × 120.79
  4. Step 4: Simplify right side
    125.80x = 22,766.36
  5. Step 5: Solve for x
    x = 22,766.36/125.80
  6. Step 6: Final answer
    x = 180.97

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.