Home / 77,410.13-128,115.38

Finding the Third Proportional to 77,410.13 and 128,115.38

Calculator

Solution

The third proportional to 77,410.13 and 128,115.38 is: 212,033.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,410.13 : 128,115.38 = 128,115.38 : x
  2. Step 2: Convert to fraction form
    77,410.13/128,115.38 = 128,115.38/x
  3. Step 3: Cross multiply
    77,410.13x = 128,115.38 × 128,115.38
  4. Step 4: Simplify right side
    77,410.13x = 16,413,549,311.39
  5. Step 5: Solve for x
    x = 16,413,549,311.39/77,410.13
  6. Step 6: Final answer
    x = 212,033.62

Related Problems

Find third proportional to 38,705.06 and 64,057.69
Half scale
Find third proportional to 154,820.25 and 256,230.75
Double scale
Find third proportional to 77,412 and 128,119
Similar ratio
Find third proportional to 116,115.19 and 192,173.06
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.66) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.