Home / 165.78-228.78-96.78

Finding the Fourth Proportional to 165.78, 228.78 and 96.78

Calculator

Solution

The fourth proportional to 165.78, 228.78 and 96.78 is: 133.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    165.78 : 228.78 = 96.78 : x
  2. Step 2: Convert to fraction form
    165.78/228.78 = 96.78/x
  3. Step 3: Cross multiply
    165.78x = 228.78 × 96.78
  4. Step 4: Simplify right side
    165.78x = 22,141.33
  5. Step 5: Solve for x
    x = 22,141.33/165.78
  6. Step 6: Final answer
    x = 133.56

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.