Home / 64,400-135,792

Finding the Third Proportional to 64,400 and 135,792

Calculator

Solution

The third proportional to 64,400 and 135,792 is: 286,327.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,400 : 135,792 = 135,792 : x
  2. Step 2: Convert to fraction form
    64,400/135,792 = 135,792/x
  3. Step 3: Cross multiply
    64,400x = 135,792 × 135,792
  4. Step 4: Simplify right side
    64,400x = 18,439,467,264
  5. Step 5: Solve for x
    x = 18,439,467,264/64,400
  6. Step 6: Final answer
    x = 286,327.13

Related Problems

Find third proportional to 32,200 and 67,896
Half scale
Find third proportional to 128,800 and 271,584
Double scale
Find third proportional to 64,402 and 135,796
Similar ratio
Find third proportional to 96,600 and 203,688
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.