Home / 65,818-128,355

Finding the Third Proportional to 65,818 and 128,355

Calculator

Solution

The third proportional to 65,818 and 128,355 is: 250,311.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,818 : 128,355 = 128,355 : x
  2. Step 2: Convert to fraction form
    65,818/128,355 = 128,355/x
  3. Step 3: Cross multiply
    65,818x = 128,355 × 128,355
  4. Step 4: Simplify right side
    65,818x = 16,475,006,025
  5. Step 5: Solve for x
    x = 16,475,006,025/65,818
  6. Step 6: Final answer
    x = 250,311.56

Related Problems

Find third proportional to 32,909 and 64,177.50
Half scale
Find third proportional to 131,636 and 256,710
Double scale
Find third proportional to 65,820 and 128,359
Similar ratio
Find third proportional to 98,727 and 192,532.50
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.