Home / 149.05-205.73-86.92

Finding the Fourth Proportional to 149.05, 205.73 and 86.92

Calculator

Solution

The fourth proportional to 149.05, 205.73 and 86.92 is: 119.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    149.05 : 205.73 = 86.92 : x
  2. Step 2: Convert to fraction form
    149.05/205.73 = 86.92/x
  3. Step 3: Cross multiply
    149.05x = 205.73 × 86.92
  4. Step 4: Simplify right side
    149.05x = 17,882.05
  5. Step 5: Solve for x
    x = 17,882.05/149.05
  6. Step 6: Final answer
    x = 119.97

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.