Home / 135,108-287,712

Finding the Third Proportional to 135,108 and 287,712

Calculator

Solution

The third proportional to 135,108 and 287,712 is: 612,681.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,108 : 287,712 = 287,712 : x
  2. Step 2: Convert to fraction form
    135,108/287,712 = 287,712/x
  3. Step 3: Cross multiply
    135,108x = 287,712 × 287,712
  4. Step 4: Simplify right side
    135,108x = 82,778,194,944
  5. Step 5: Solve for x
    x = 82,778,194,944/135,108
  6. Step 6: Final answer
    x = 612,681.67

Related Problems

Find third proportional to 67,554 and 143,856
Half scale
Find third proportional to 270,216 and 575,424
Double scale
Find third proportional to 135,110 and 287,716
Similar ratio
Find third proportional to 202,662 and 431,568
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.