Home / 81,394-178,100

Finding the Third Proportional to 81,394 and 178,100

Calculator

Solution

The third proportional to 81,394 and 178,100 is: 389,704.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,394 : 178,100 = 178,100 : x
  2. Step 2: Convert to fraction form
    81,394/178,100 = 178,100/x
  3. Step 3: Cross multiply
    81,394x = 178,100 × 178,100
  4. Step 4: Simplify right side
    81,394x = 31,719,610,000
  5. Step 5: Solve for x
    x = 31,719,610,000/81,394
  6. Step 6: Final answer
    x = 389,704.52

Related Problems

Find third proportional to 40,697 and 89,050
Half scale
Find third proportional to 162,788 and 356,200
Double scale
Find third proportional to 81,396 and 178,104
Similar ratio
Find third proportional to 122,091 and 267,150
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.