Home / 146.49-219.84-85.64

Finding the Fourth Proportional to 146.49, 219.84 and 85.64

Calculator

Solution

The fourth proportional to 146.49, 219.84 and 85.64 is: 128.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    146.49 : 219.84 = 85.64 : x
  2. Step 2: Convert to fraction form
    146.49/219.84 = 85.64/x
  3. Step 3: Cross multiply
    146.49x = 219.84 × 85.64
  4. Step 4: Simplify right side
    146.49x = 18,826.00
  5. Step 5: Solve for x
    x = 18,826.00/146.49
  6. Step 6: Final answer
    x = 128.51

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.