Home / 72,478-115,305

Finding the Third Proportional to 72,478 and 115,305

Calculator

Solution

The third proportional to 72,478 and 115,305 is: 183,438.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,478 : 115,305 = 115,305 : x
  2. Step 2: Convert to fraction form
    72,478/115,305 = 115,305/x
  3. Step 3: Cross multiply
    72,478x = 115,305 × 115,305
  4. Step 4: Simplify right side
    72,478x = 13,295,243,025
  5. Step 5: Solve for x
    x = 13,295,243,025/72,478
  6. Step 6: Final answer
    x = 183,438.33

Related Problems

Find third proportional to 36,239 and 57,652.50
Half scale
Find third proportional to 144,956 and 230,610
Double scale
Find third proportional to 72,480 and 115,308
Similar ratio
Find third proportional to 108,717 and 172,957.50
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.