Home / 55,419-121,611

Finding the Third Proportional to 55,419 and 121,611

Calculator

Solution

The third proportional to 55,419 and 121,611 is: 266,862.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,419 : 121,611 = 121,611 : x
  2. Step 2: Convert to fraction form
    55,419/121,611 = 121,611/x
  3. Step 3: Cross multiply
    55,419x = 121,611 × 121,611
  4. Step 4: Simplify right side
    55,419x = 14,789,235,321
  5. Step 5: Solve for x
    x = 14,789,235,321/55,419
  6. Step 6: Final answer
    x = 266,862.18

Related Problems

Find third proportional to 27,709.50 and 60,805.50
Half scale
Find third proportional to 110,838 and 243,222
Double scale
Find third proportional to 55,421 and 121,615
Similar ratio
Find third proportional to 83,128.50 and 182,416.50
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.