Home / 184.45-254.57-105.78

Finding the Fourth Proportional to 184.45, 254.57 and 105.78

Calculator

Solution

The fourth proportional to 184.45, 254.57 and 105.78 is: 145.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    184.45 : 254.57 = 105.78 : x
  2. Step 2: Convert to fraction form
    184.45/254.57 = 105.78/x
  3. Step 3: Cross multiply
    184.45x = 254.57 × 105.78
  4. Step 4: Simplify right side
    184.45x = 26,928.15
  5. Step 5: Solve for x
    x = 26,928.15/184.45
  6. Step 6: Final answer
    x = 145.99

Related Problems

Find fourth proportional to 92.23, 127.28 and 52.89
Half scale
Find fourth proportional to 368.91, 509.14 and 211.56
Double scale
Find fourth proportional to 185.45, 255.95 and 106.78
Similar ratio
Find fourth proportional to 276.68, 381.85 and 158.67
1.5x scale

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.