Finding the Fourth Proportional to 144,811.79, 199,840.14 and 81,150.05
Calculator
Solution
The fourth proportional to 144,811.79, 199,840.14 and 81,150.05 is: 111,986.99
Step by Step Solution
- Step 1: Write the proportion equation
144,811.79 : 199,840.14 = 81,150.05 : x - Step 2: Convert to fraction form
144,811.79/199,840.14 = 81,150.05/x - Step 3: Cross multiply
144,811.79x = 199,840.14 × 81,150.05 - Step 4: Simplify right side
144,811.79x = 16,217,036,353.81 - Step 5: Solve for x
x = 16,217,036,353.81/144,811.79 - Step 6: Final answer
x = 111,986.99
Related Problems
Find fourth proportional to 72,405.90, 99,920.07 and 40,575.02
Half scale
Find fourth proportional to 289,623.59, 399,680.28 and 162,300.09
Double scale
Find fourth proportional to 144,812.79, 199,841.52 and 81,151.05
Similar ratio
Find fourth proportional to 217,217.69, 299,760.21 and 121,725.07
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.