Home / 121,116-253,320

Finding the Third Proportional to 121,116 and 253,320

Calculator

Solution

The third proportional to 121,116 and 253,320 is: 529,831.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,116 : 253,320 = 253,320 : x
  2. Step 2: Convert to fraction form
    121,116/253,320 = 253,320/x
  3. Step 3: Cross multiply
    121,116x = 253,320 × 253,320
  4. Step 4: Simplify right side
    121,116x = 64,171,022,400
  5. Step 5: Solve for x
    x = 64,171,022,400/121,116
  6. Step 6: Final answer
    x = 529,831.09

Related Problems

Find third proportional to 60,558 and 126,660
Half scale
Find third proportional to 242,232 and 506,640
Double scale
Find third proportional to 121,118 and 253,324
Similar ratio
Find third proportional to 181,674 and 379,980
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.