Home / 129.38-234

Finding the Third Proportional to 129.38 and 234

Calculator

Solution

The third proportional to 129.38 and 234 is: 423.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    129.38 : 234 = 234 : x
  2. Step 2: Convert to fraction form
    129.38/234 = 234/x
  3. Step 3: Cross multiply
    129.38x = 234 × 234
  4. Step 4: Simplify right side
    129.38x = 54,756
  5. Step 5: Solve for x
    x = 54,756/129.38
  6. Step 6: Final answer
    x = 423.23

Related Problems

Find third proportional to 64.69 and 117
Half scale
Find third proportional to 258.75 and 468
Double scale
Find third proportional to 131 and 238
Similar ratio
Find third proportional to 194.06 and 351
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.81) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.