Home / 129,030-205,450

Finding the Third Proportional to 129,030 and 205,450

Calculator

Solution

The third proportional to 129,030 and 205,450 is: 327,130.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,030 : 205,450 = 205,450 : x
  2. Step 2: Convert to fraction form
    129,030/205,450 = 205,450/x
  3. Step 3: Cross multiply
    129,030x = 205,450 × 205,450
  4. Step 4: Simplify right side
    129,030x = 42,209,702,500
  5. Step 5: Solve for x
    x = 42,209,702,500/129,030
  6. Step 6: Final answer
    x = 327,130.92

Related Problems

Find third proportional to 64,515 and 102,725
Half scale
Find third proportional to 258,060 and 410,900
Double scale
Find third proportional to 129,032 and 205,453
Similar ratio
Find third proportional to 193,545 and 308,175
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.