Home / 78,278-119,109

Finding the Third Proportional to 78,278 and 119,109

Calculator

Solution

The third proportional to 78,278 and 119,109 is: 181,238.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,278 : 119,109 = 119,109 : x
  2. Step 2: Convert to fraction form
    78,278/119,109 = 119,109/x
  3. Step 3: Cross multiply
    78,278x = 119,109 × 119,109
  4. Step 4: Simplify right side
    78,278x = 14,186,953,881
  5. Step 5: Solve for x
    x = 14,186,953,881/78,278
  6. Step 6: Final answer
    x = 181,238.07

Related Problems

Find third proportional to 39,139 and 59,554.50
Half scale
Find third proportional to 156,556 and 238,218
Double scale
Find third proportional to 78,280 and 119,112
Similar ratio
Find third proportional to 117,417 and 178,663.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.