Home / 85,709-128,481.50

Finding the Third Proportional to 85,709 and 128,481.50

Calculator

Solution

The third proportional to 85,709 and 128,481.50 is: 192,599.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,709 : 128,481.50 = 128,481.50 : x
  2. Step 2: Convert to fraction form
    85,709/128,481.50 = 128,481.50/x
  3. Step 3: Cross multiply
    85,709x = 128,481.50 × 128,481.50
  4. Step 4: Simplify right side
    85,709x = 16,507,495,842.25
  5. Step 5: Solve for x
    x = 16,507,495,842.25/85,709
  6. Step 6: Final answer
    x = 192,599.33

Related Problems

Find third proportional to 42,854.50 and 64,240.75
Half scale
Find third proportional to 171,418 and 256,963
Double scale
Find third proportional to 85,711 and 128,484
Similar ratio
Find third proportional to 128,563.50 and 192,722.25
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.