Home / 66,236-129,140

Finding the Third Proportional to 66,236 and 129,140

Calculator

Solution

The third proportional to 66,236 and 129,140 is: 251,783.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,236 : 129,140 = 129,140 : x
  2. Step 2: Convert to fraction form
    66,236/129,140 = 129,140/x
  3. Step 3: Cross multiply
    66,236x = 129,140 × 129,140
  4. Step 4: Simplify right side
    66,236x = 16,677,139,600
  5. Step 5: Solve for x
    x = 16,677,139,600/66,236
  6. Step 6: Final answer
    x = 251,783.62

Related Problems

Find third proportional to 33,118 and 64,570
Half scale
Find third proportional to 132,472 and 258,280
Double scale
Find third proportional to 66,238 and 129,144
Similar ratio
Find third proportional to 99,354 and 193,710
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.95) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.