Home / 77,619-169,770

Finding the Third Proportional to 77,619 and 169,770

Calculator

Solution

The third proportional to 77,619 and 169,770 is: 371,324.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,619 : 169,770 = 169,770 : x
  2. Step 2: Convert to fraction form
    77,619/169,770 = 169,770/x
  3. Step 3: Cross multiply
    77,619x = 169,770 × 169,770
  4. Step 4: Simplify right side
    77,619x = 28,821,852,900
  5. Step 5: Solve for x
    x = 28,821,852,900/77,619
  6. Step 6: Final answer
    x = 371,324.71

Related Problems

Find third proportional to 38,809.50 and 84,885
Half scale
Find third proportional to 155,238 and 339,540
Double scale
Find third proportional to 77,621 and 169,774
Similar ratio
Find third proportional to 116,428.50 and 254,655
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.