Home / 78,400-118,329

Finding the Third Proportional to 78,400 and 118,329

Calculator

Solution

The third proportional to 78,400 and 118,329 is: 178,593.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,400 : 118,329 = 118,329 : x
  2. Step 2: Convert to fraction form
    78,400/118,329 = 118,329/x
  3. Step 3: Cross multiply
    78,400x = 118,329 × 118,329
  4. Step 4: Simplify right side
    78,400x = 14,001,752,241
  5. Step 5: Solve for x
    x = 14,001,752,241/78,400
  6. Step 6: Final answer
    x = 178,593.78

Related Problems

Find third proportional to 39,200 and 59,164.50
Half scale
Find third proportional to 156,800 and 236,658
Double scale
Find third proportional to 78,402 and 118,332
Similar ratio
Find third proportional to 117,600 and 177,493.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.