Home / 105.06-145.02-74.13

Finding the Fourth Proportional to 105.06, 145.02 and 74.13

Calculator

Solution

The fourth proportional to 105.06, 145.02 and 74.13 is: 102.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    105.06 : 145.02 = 74.13 : x
  2. Step 2: Convert to fraction form
    105.06/145.02 = 74.13/x
  3. Step 3: Cross multiply
    105.06x = 145.02 × 74.13
  4. Step 4: Simplify right side
    105.06x = 10,750.33
  5. Step 5: Solve for x
    x = 10,750.33/105.06
  6. Step 6: Final answer
    x = 102.33

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.