Home / 78,372-169,866

Finding the Third Proportional to 78,372 and 169,866

Calculator

Solution

The third proportional to 78,372 and 169,866 is: 368,173.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,372 : 169,866 = 169,866 : x
  2. Step 2: Convert to fraction form
    78,372/169,866 = 169,866/x
  3. Step 3: Cross multiply
    78,372x = 169,866 × 169,866
  4. Step 4: Simplify right side
    78,372x = 28,854,457,956
  5. Step 5: Solve for x
    x = 28,854,457,956/78,372
  6. Step 6: Final answer
    x = 368,173.05

Related Problems

Find third proportional to 39,186 and 84,933
Half scale
Find third proportional to 156,744 and 339,732
Double scale
Find third proportional to 78,374 and 169,870
Similar ratio
Find third proportional to 117,558 and 254,799
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.