Home / 149.56-206.43-91.39

Finding the Fourth Proportional to 149.56, 206.43 and 91.39

Calculator

Solution

The fourth proportional to 149.56, 206.43 and 91.39 is: 126.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    149.56 : 206.43 = 91.39 : x
  2. Step 2: Convert to fraction form
    149.56/206.43 = 91.39/x
  3. Step 3: Cross multiply
    149.56x = 206.43 × 91.39
  4. Step 4: Simplify right side
    149.56x = 18,864.15
  5. Step 5: Solve for x
    x = 18,864.15/149.56
  6. Step 6: Final answer
    x = 126.14

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.