Home / 74,990-156,910

Finding the Third Proportional to 74,990 and 156,910

Calculator

Solution

The third proportional to 74,990 and 156,910 is: 328,320.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,990 : 156,910 = 156,910 : x
  2. Step 2: Convert to fraction form
    74,990/156,910 = 156,910/x
  3. Step 3: Cross multiply
    74,990x = 156,910 × 156,910
  4. Step 4: Simplify right side
    74,990x = 24,620,748,100
  5. Step 5: Solve for x
    x = 24,620,748,100/74,990
  6. Step 6: Final answer
    x = 328,320.42

Related Problems

Find third proportional to 37,495 and 78,455
Half scale
Find third proportional to 149,980 and 313,820
Double scale
Find third proportional to 74,992 and 156,914
Similar ratio
Find third proportional to 112,485 and 235,365
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.