Home / 182.20-273.30-143.80

Finding the Fourth Proportional to 182.20, 273.30 and 143.80

Calculator

Solution

The fourth proportional to 182.20, 273.30 and 143.80 is: 215.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    182.20 : 273.30 = 143.80 : x
  2. Step 2: Convert to fraction form
    182.20/273.30 = 143.80/x
  3. Step 3: Cross multiply
    182.20x = 273.30 × 143.80
  4. Step 4: Simplify right side
    182.20x = 39,300.54
  5. Step 5: Solve for x
    x = 39,300.54/182.20
  6. Step 6: Final answer
    x = 215.70

Related Problems

Find fourth proportional to 91.10, 136.65 and 71.90
Half scale
Find fourth proportional to 364.40, 546.60 and 287.60
Double scale
Find fourth proportional to 183.20, 274.80 and 144.80
Similar ratio
Find fourth proportional to 273.30, 409.95 and 215.70
1.5x scale

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.