Home / 129,702-282,129

Finding the Third Proportional to 129,702 and 282,129

Calculator

Solution

The third proportional to 129,702 and 282,129 is: 613,689.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,702 : 282,129 = 282,129 : x
  2. Step 2: Convert to fraction form
    129,702/282,129 = 282,129/x
  3. Step 3: Cross multiply
    129,702x = 282,129 × 282,129
  4. Step 4: Simplify right side
    129,702x = 79,596,772,641
  5. Step 5: Solve for x
    x = 79,596,772,641/129,702
  6. Step 6: Final answer
    x = 613,689.63

Related Problems

Find third proportional to 64,851 and 141,064.50
Half scale
Find third proportional to 259,404 and 564,258
Double scale
Find third proportional to 129,704 and 282,133
Similar ratio
Find third proportional to 194,553 and 423,193.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.