Finding the Fourth Proportional to 205,138.34, 307,844.95 and 72,018.99
Calculator
Solution
The fourth proportional to 205,138.34, 307,844.95 and 72,018.99 is: 108,076.74
Step by Step Solution
- Step 1: Write the proportion equation
205,138.34 : 307,844.95 = 72,018.99 : x - Step 2: Convert to fraction form
205,138.34/307,844.95 = 72,018.99/x - Step 3: Cross multiply
205,138.34x = 307,844.95 × 72,018.99 - Step 4: Simplify right side
205,138.34x = 22,170,682,375.60 - Step 5: Solve for x
x = 22,170,682,375.60/205,138.34 - Step 6: Final answer
x = 108,076.74
Related Problems
Find fourth proportional to 102,569.17, 153,922.48 and 36,009.50
Half scale
Find fourth proportional to 410,276.68, 615,689.90 and 144,037.98
Double scale
Find fourth proportional to 205,139.34, 307,846.45 and 72,019.99
Similar ratio
Find fourth proportional to 307,707.51, 461,767.43 and 108,028.49
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.