Finding the Fourth Proportional to 190,661.30, 285,821.99 and 72,415.67
Calculator
Solution
The fourth proportional to 190,661.30, 285,821.99 and 72,415.67 is: 108,558.95
Step by Step Solution
- Step 1: Write the proportion equation
190,661.30 : 285,821.99 = 72,415.67 : x - Step 2: Convert to fraction form
190,661.30/285,821.99 = 72,415.67/x - Step 3: Cross multiply
190,661.30x = 285,821.99 × 72,415.67 - Step 4: Simplify right side
190,661.30x = 20,697,989,115.40 - Step 5: Solve for x
x = 20,697,989,115.40/190,661.30 - Step 6: Final answer
x = 108,558.95
Related Problems
Find fourth proportional to 95,330.65, 142,910.99 and 36,207.83
Half scale
Find fourth proportional to 381,322.59, 571,643.97 and 144,831.33
Double scale
Find fourth proportional to 190,662.30, 285,823.48 and 72,416.67
Similar ratio
Find fourth proportional to 285,991.94, 428,732.98 and 108,623.50
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.