Home / 81,664-177,912

Finding the Third Proportional to 81,664 and 177,912

Calculator

Solution

The third proportional to 81,664 and 177,912 is: 387,596.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,664 : 177,912 = 177,912 : x
  2. Step 2: Convert to fraction form
    81,664/177,912 = 177,912/x
  3. Step 3: Cross multiply
    81,664x = 177,912 × 177,912
  4. Step 4: Simplify right side
    81,664x = 31,652,679,744
  5. Step 5: Solve for x
    x = 31,652,679,744/81,664
  6. Step 6: Final answer
    x = 387,596.49

Related Problems

Find third proportional to 40,832 and 88,956
Half scale
Find third proportional to 163,328 and 355,824
Double scale
Find third proportional to 81,666 and 177,916
Similar ratio
Find third proportional to 122,496 and 266,868
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.