Home / 84,170-129,367

Finding the Third Proportional to 84,170 and 129,367

Calculator

Solution

The third proportional to 84,170 and 129,367 is: 198,833.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,170 : 129,367 = 129,367 : x
  2. Step 2: Convert to fraction form
    84,170/129,367 = 129,367/x
  3. Step 3: Cross multiply
    84,170x = 129,367 × 129,367
  4. Step 4: Simplify right side
    84,170x = 16,735,820,689
  5. Step 5: Solve for x
    x = 16,735,820,689/84,170
  6. Step 6: Final answer
    x = 198,833.56

Related Problems

Find third proportional to 42,085 and 64,683.50
Half scale
Find third proportional to 168,340 and 258,734
Double scale
Find third proportional to 84,172 and 129,370
Similar ratio
Find third proportional to 126,255 and 194,050.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.