Home / 128,680-195,207

Finding the Third Proportional to 128,680 and 195,207

Calculator

Solution

The third proportional to 128,680 and 195,207 is: 296,128.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,680 : 195,207 = 195,207 : x
  2. Step 2: Convert to fraction form
    128,680/195,207 = 195,207/x
  3. Step 3: Cross multiply
    128,680x = 195,207 × 195,207
  4. Step 4: Simplify right side
    128,680x = 38,105,772,849
  5. Step 5: Solve for x
    x = 38,105,772,849/128,680
  6. Step 6: Final answer
    x = 296,128.17

Related Problems

Find third proportional to 64,340 and 97,603.50
Half scale
Find third proportional to 257,360 and 390,414
Double scale
Find third proportional to 128,682 and 195,210
Similar ratio
Find third proportional to 193,020 and 292,810.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.