Home / 112-154.56-66

Finding the Fourth Proportional to 112, 154.56 and 66

Calculator

Solution

The fourth proportional to 112, 154.56 and 66 is: 91.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    112 : 154.56 = 66 : x
  2. Step 2: Convert to fraction form
    112/154.56 = 66/x
  3. Step 3: Cross multiply
    112x = 154.56 × 66
  4. Step 4: Simplify right side
    112x = 10,200.96
  5. Step 5: Solve for x
    x = 10,200.96/112
  6. Step 6: Final answer
    x = 91.08

Related Problems

Find fourth proportional to 56, 77.28 and 33
Half scale
Find fourth proportional to 224, 309.12 and 132
Double scale
Find fourth proportional to 113, 155.94 and 67
Similar ratio
Find fourth proportional to 168, 231.84 and 99
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.