Home / 150-207-137.76

Finding the Fourth Proportional to 150, 207 and 137.76

Calculator

Solution

The fourth proportional to 150, 207 and 137.76 is: 190.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    150 : 207 = 137.76 : x
  2. Step 2: Convert to fraction form
    150/207 = 137.76/x
  3. Step 3: Cross multiply
    150x = 207 × 137.76
  4. Step 4: Simplify right side
    150x = 28,516.32
  5. Step 5: Solve for x
    x = 28,516.32/150
  6. Step 6: Final answer
    x = 190.11

Related Problems

Find fourth proportional to 75, 103.50 and 68.88
Half scale
Find fourth proportional to 300, 414 and 275.52
Double scale
Find fourth proportional to 151, 208.38 and 138.76
Similar ratio
Find fourth proportional to 225, 310.50 and 206.64
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.