Home / 109-150.42-65.36

Finding the Fourth Proportional to 109, 150.42 and 65.36

Calculator

Solution

The fourth proportional to 109, 150.42 and 65.36 is: 90.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    109 : 150.42 = 65.36 : x
  2. Step 2: Convert to fraction form
    109/150.42 = 65.36/x
  3. Step 3: Cross multiply
    109x = 150.42 × 65.36
  4. Step 4: Simplify right side
    109x = 9,831.45
  5. Step 5: Solve for x
    x = 9,831.45/109
  6. Step 6: Final answer
    x = 90.20

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.