Finding the Third Proportional to 77,100 and 120,974.75
Calculator
Solution
The third proportional to 77,100 and 120,974.75 is: 189,816.99
Step by Step Solution
- Step 1: Write the proportion equation
77,100 : 120,974.75 = 120,974.75 : x - Step 2: Convert to fraction form
77,100/120,974.75 = 120,974.75/x - Step 3: Cross multiply
77,100x = 120,974.75 × 120,974.75 - Step 4: Simplify right side
77,100x = 14,634,890,137.56 - Step 5: Solve for x
x = 14,634,890,137.56/77,100 - Step 6: Final answer
x = 189,816.99
Related Problems
Find third proportional to 38,550 and 60,487.38
Half scale
Find third proportional to 154,200 and 241,949.50
Double scale
Find third proportional to 77,102 and 120,978
Similar ratio
Find third proportional to 115,650 and 181,462.13
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.