Home / 109.48-151.02-72.57

Finding the Fourth Proportional to 109.48, 151.02 and 72.57

Calculator

Solution

The fourth proportional to 109.48, 151.02 and 72.57 is: 100.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    109.48 : 151.02 = 72.57 : x
  2. Step 2: Convert to fraction form
    109.48/151.02 = 72.57/x
  3. Step 3: Cross multiply
    109.48x = 151.02 × 72.57
  4. Step 4: Simplify right side
    109.48x = 10,959.52
  5. Step 5: Solve for x
    x = 10,959.52/109.48
  6. Step 6: Final answer
    x = 100.11

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.