Home / 128,798-169,772

Finding the Third Proportional to 128,798 and 169,772

Calculator

Solution

The third proportional to 128,798 and 169,772 is: 223,780.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,798 : 169,772 = 169,772 : x
  2. Step 2: Convert to fraction form
    128,798/169,772 = 169,772/x
  3. Step 3: Cross multiply
    128,798x = 169,772 × 169,772
  4. Step 4: Simplify right side
    128,798x = 28,822,531,984
  5. Step 5: Solve for x
    x = 28,822,531,984/128,798
  6. Step 6: Final answer
    x = 223,780.90

Related Problems

Find third proportional to 64,399 and 84,886
Half scale
Find third proportional to 257,596 and 339,544
Double scale
Find third proportional to 128,800 and 169,775
Similar ratio
Find third proportional to 193,197 and 254,658
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.