Home / 85,125-128,871

Finding the Third Proportional to 85,125 and 128,871

Calculator

Solution

The third proportional to 85,125 and 128,871 is: 195,098.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,125 : 128,871 = 128,871 : x
  2. Step 2: Convert to fraction form
    85,125/128,871 = 128,871/x
  3. Step 3: Cross multiply
    85,125x = 128,871 × 128,871
  4. Step 4: Simplify right side
    85,125x = 16,607,734,641
  5. Step 5: Solve for x
    x = 16,607,734,641/85,125
  6. Step 6: Final answer
    x = 195,098.20

Related Problems

Find third proportional to 42,562.50 and 64,435.50
Half scale
Find third proportional to 170,250 and 257,742
Double scale
Find third proportional to 85,127 and 128,874
Similar ratio
Find third proportional to 127,687.50 and 193,306.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.