Home / 103.25-142.54-66.44

Finding the Fourth Proportional to 103.25, 142.54 and 66.44

Calculator

Solution

The fourth proportional to 103.25, 142.54 and 66.44 is: 91.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    103.25 : 142.54 = 66.44 : x
  2. Step 2: Convert to fraction form
    103.25/142.54 = 66.44/x
  3. Step 3: Cross multiply
    103.25x = 142.54 × 66.44
  4. Step 4: Simplify right side
    103.25x = 9,470.36
  5. Step 5: Solve for x
    x = 9,470.36/103.25
  6. Step 6: Final answer
    x = 91.72

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.