Home / 78,775-121,082

Finding the Third Proportional to 78,775 and 121,082

Calculator

Solution

The third proportional to 78,775 and 121,082 is: 186,110.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,775 : 121,082 = 121,082 : x
  2. Step 2: Convert to fraction form
    78,775/121,082 = 121,082/x
  3. Step 3: Cross multiply
    78,775x = 121,082 × 121,082
  4. Step 4: Simplify right side
    78,775x = 14,660,850,724
  5. Step 5: Solve for x
    x = 14,660,850,724/78,775
  6. Step 6: Final answer
    x = 186,110.45

Related Problems

Find third proportional to 39,387.50 and 60,541
Half scale
Find third proportional to 157,550 and 242,164
Double scale
Find third proportional to 78,777 and 121,085
Similar ratio
Find third proportional to 118,162.50 and 181,623
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.