Home / 78,945-121,338

Finding the Third Proportional to 78,945 and 121,338

Calculator

Solution

The third proportional to 78,945 and 121,338 is: 186,495.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,945 : 121,338 = 121,338 : x
  2. Step 2: Convert to fraction form
    78,945/121,338 = 121,338/x
  3. Step 3: Cross multiply
    78,945x = 121,338 × 121,338
  4. Step 4: Simplify right side
    78,945x = 14,722,910,244
  5. Step 5: Solve for x
    x = 14,722,910,244/78,945
  6. Step 6: Final answer
    x = 186,495.79

Related Problems

Find third proportional to 39,472.50 and 60,669
Half scale
Find third proportional to 157,890 and 242,676
Double scale
Find third proportional to 78,947 and 121,341
Similar ratio
Find third proportional to 118,417.50 and 182,007
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.