Home / 111.25-153.62-69.87

Finding the Fourth Proportional to 111.25, 153.62 and 69.87

Calculator

Solution

The fourth proportional to 111.25, 153.62 and 69.87 is: 96.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    111.25 : 153.62 = 69.87 : x
  2. Step 2: Convert to fraction form
    111.25/153.62 = 69.87/x
  3. Step 3: Cross multiply
    111.25x = 153.62 × 69.87
  4. Step 4: Simplify right side
    111.25x = 10,733.81
  5. Step 5: Solve for x
    x = 10,733.81/111.25
  6. Step 6: Final answer
    x = 96.48

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.