Home / 92.49-138.60-74.49

Finding the Fourth Proportional to 92.49, 138.60 and 74.49

Calculator

Solution

The fourth proportional to 92.49, 138.60 and 74.49 is: 111.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    92.49 : 138.60 = 74.49 : x
  2. Step 2: Convert to fraction form
    92.49/138.60 = 74.49/x
  3. Step 3: Cross multiply
    92.49x = 138.60 × 74.49
  4. Step 4: Simplify right side
    92.49x = 10,324.31
  5. Step 5: Solve for x
    x = 10,324.31/92.49
  6. Step 6: Final answer
    x = 111.63

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.