Home / 129,879-207,483.75

Finding the Third Proportional to 129,879 and 207,483.75

Calculator

Solution

The third proportional to 129,879 and 207,483.75 is: 331,458.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,879 : 207,483.75 = 207,483.75 : x
  2. Step 2: Convert to fraction form
    129,879/207,483.75 = 207,483.75/x
  3. Step 3: Cross multiply
    129,879x = 207,483.75 × 207,483.75
  4. Step 4: Simplify right side
    129,879x = 43,049,506,514.06
  5. Step 5: Solve for x
    x = 43,049,506,514.06/129,879
  6. Step 6: Final answer
    x = 331,458.56

Related Problems

Find third proportional to 64,939.50 and 103,741.88
Half scale
Find third proportional to 259,758 and 414,967.50
Double scale
Find third proportional to 129,881 and 207,487
Similar ratio
Find third proportional to 194,818.50 and 311,225.63
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.