Home / 128.73-193.11-101.64

Finding the Fourth Proportional to 128.73, 193.11 and 101.64

Calculator

Solution

The fourth proportional to 128.73, 193.11 and 101.64 is: 152.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    128.73 : 193.11 = 101.64 : x
  2. Step 2: Convert to fraction form
    128.73/193.11 = 101.64/x
  3. Step 3: Cross multiply
    128.73x = 193.11 × 101.64
  4. Step 4: Simplify right side
    128.73x = 19,627.70
  5. Step 5: Solve for x
    x = 19,627.70/128.73
  6. Step 6: Final answer
    x = 152.47

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.