Home / 128.74-193.13-37.43

Finding the Fourth Proportional to 128.74, 193.13 and 37.43

Calculator

Solution

The fourth proportional to 128.74, 193.13 and 37.43 is: 56.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    128.74 : 193.13 = 37.43 : x
  2. Step 2: Convert to fraction form
    128.74/193.13 = 37.43/x
  3. Step 3: Cross multiply
    128.74x = 193.13 × 37.43
  4. Step 4: Simplify right side
    128.74x = 7,228.86
  5. Step 5: Solve for x
    x = 7,228.86/128.74
  6. Step 6: Final answer
    x = 56.15

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.