Finding the Third Proportional to 81,012 and 108,391
Calculator
Solution
The third proportional to 81,012 and 108,391 is: 145,023.07
Step by Step Solution
- Step 1: Write the proportion equation
81,012 : 108,391 = 108,391 : x - Step 2: Convert to fraction form
81,012/108,391 = 108,391/x - Step 3: Cross multiply
81,012x = 108,391 × 108,391 - Step 4: Simplify right side
81,012x = 11,748,608,881 - Step 5: Solve for x
x = 11,748,608,881/81,012 - Step 6: Final answer
x = 145,023.07
Related Problems
Find third proportional to 40,506 and 54,195.50
Half scale
Find third proportional to 162,024 and 216,782
Double scale
Find third proportional to 81,014 and 108,394
Similar ratio
Find third proportional to 121,518 and 162,586.50
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.