Home / 90.75-140.63

Finding the Third Proportional to 90.75 and 140.63

Calculator

Solution

The third proportional to 90.75 and 140.63 is: 217.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    90.75 : 140.63 = 140.63 : x
  2. Step 2: Convert to fraction form
    90.75/140.63 = 140.63/x
  3. Step 3: Cross multiply
    90.75x = 140.63 × 140.63
  4. Step 4: Simplify right side
    90.75x = 19,775.39
  5. Step 5: Solve for x
    x = 19,775.39/90.75
  6. Step 6: Final answer
    x = 217.91

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.