Home / 51,100-81,258

Finding the Third Proportional to 51,100 and 81,258

Calculator

Solution

The third proportional to 51,100 and 81,258 is: 129,214.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,100 : 81,258 = 81,258 : x
  2. Step 2: Convert to fraction form
    51,100/81,258 = 81,258/x
  3. Step 3: Cross multiply
    51,100x = 81,258 × 81,258
  4. Step 4: Simplify right side
    51,100x = 6,602,862,564
  5. Step 5: Solve for x
    x = 6,602,862,564/51,100
  6. Step 6: Final answer
    x = 129,214.53

Related Problems

Find third proportional to 25,550 and 40,629
Half scale
Find third proportional to 102,200 and 162,516
Double scale
Find third proportional to 51,102 and 81,261
Similar ratio
Find third proportional to 76,650 and 121,887
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.