Home / 127.56-191.22-42

Finding the Fourth Proportional to 127.56, 191.22 and 42

Calculator

Solution

The fourth proportional to 127.56, 191.22 and 42 is: 62.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    127.56 : 191.22 = 42 : x
  2. Step 2: Convert to fraction form
    127.56/191.22 = 42/x
  3. Step 3: Cross multiply
    127.56x = 191.22 × 42
  4. Step 4: Simplify right side
    127.56x = 8,031.24
  5. Step 5: Solve for x
    x = 8,031.24/127.56
  6. Step 6: Final answer
    x = 62.96

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.