Home / 129,688-190,320

Finding the Third Proportional to 129,688 and 190,320

Calculator

Solution

The third proportional to 129,688 and 190,320 is: 279,298.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,688 : 190,320 = 190,320 : x
  2. Step 2: Convert to fraction form
    129,688/190,320 = 190,320/x
  3. Step 3: Cross multiply
    129,688x = 190,320 × 190,320
  4. Step 4: Simplify right side
    129,688x = 36,221,702,400
  5. Step 5: Solve for x
    x = 36,221,702,400/129,688
  6. Step 6: Final answer
    x = 279,298.80

Related Problems

Find third proportional to 64,844 and 95,160
Half scale
Find third proportional to 259,376 and 380,640
Double scale
Find third proportional to 129,690 and 190,323
Similar ratio
Find third proportional to 194,532 and 285,480
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.