Home / 135,912-209,928

Finding the Third Proportional to 135,912 and 209,928

Calculator

Solution

The third proportional to 135,912 and 209,928 is: 324,252.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,912 : 209,928 = 209,928 : x
  2. Step 2: Convert to fraction form
    135,912/209,928 = 209,928/x
  3. Step 3: Cross multiply
    135,912x = 209,928 × 209,928
  4. Step 4: Simplify right side
    135,912x = 44,069,765,184
  5. Step 5: Solve for x
    x = 44,069,765,184/135,912
  6. Step 6: Final answer
    x = 324,252.20

Related Problems

Find third proportional to 67,956 and 104,964
Half scale
Find third proportional to 271,824 and 419,856
Double scale
Find third proportional to 135,914 and 209,931
Similar ratio
Find third proportional to 203,868 and 314,892
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.