Home / 69,370-128,894

Finding the Third Proportional to 69,370 and 128,894

Calculator

Solution

The third proportional to 69,370 and 128,894 is: 239,493.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,370 : 128,894 = 128,894 : x
  2. Step 2: Convert to fraction form
    69,370/128,894 = 128,894/x
  3. Step 3: Cross multiply
    69,370x = 128,894 × 128,894
  4. Step 4: Simplify right side
    69,370x = 16,613,663,236
  5. Step 5: Solve for x
    x = 16,613,663,236/69,370
  6. Step 6: Final answer
    x = 239,493.49

Related Problems

Find third proportional to 34,685 and 64,447
Half scale
Find third proportional to 138,740 and 257,788
Double scale
Find third proportional to 69,372 and 128,898
Similar ratio
Find third proportional to 104,055 and 193,341
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.86) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.