Home / 87,160-122,740

Finding the Third Proportional to 87,160 and 122,740

Calculator

Solution

The third proportional to 87,160 and 122,740 is: 172,844.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,160 : 122,740 = 122,740 : x
  2. Step 2: Convert to fraction form
    87,160/122,740 = 122,740/x
  3. Step 3: Cross multiply
    87,160x = 122,740 × 122,740
  4. Step 4: Simplify right side
    87,160x = 15,065,107,600
  5. Step 5: Solve for x
    x = 15,065,107,600/87,160
  6. Step 6: Final answer
    x = 172,844.28

Related Problems

Find third proportional to 43,580 and 61,370
Half scale
Find third proportional to 174,320 and 245,480
Double scale
Find third proportional to 87,162 and 122,743
Similar ratio
Find third proportional to 130,740 and 184,110
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.