Home / 97,778-139,470

Finding the Third Proportional to 97,778 and 139,470

Calculator

Solution

The third proportional to 97,778 and 139,470 is: 198,939.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,778 : 139,470 = 139,470 : x
  2. Step 2: Convert to fraction form
    97,778/139,470 = 139,470/x
  3. Step 3: Cross multiply
    97,778x = 139,470 × 139,470
  4. Step 4: Simplify right side
    97,778x = 19,451,880,900
  5. Step 5: Solve for x
    x = 19,451,880,900/97,778
  6. Step 6: Final answer
    x = 198,939.24

Related Problems

Find third proportional to 48,889 and 69,735
Half scale
Find third proportional to 195,556 and 278,940
Double scale
Find third proportional to 97,780 and 139,473
Similar ratio
Find third proportional to 146,667 and 209,205
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.