Finding the Fourth Proportional to 129,559.94, 194,192.49 and 78,847.09
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Solution
The fourth proportional to 129,559.94, 194,192.49 and 78,847.09 is: 118,180.92
Step by Step Solution
- Step 1: Write the proportion equation
129,559.94 : 194,192.49 = 78,847.09 : x - Step 2: Convert to fraction form
129,559.94/194,192.49 = 78,847.09/x - Step 3: Cross multiply
129,559.94x = 194,192.49 × 78,847.09 - Step 4: Simplify right side
129,559.94x = 15,311,512,736.35 - Step 5: Solve for x
x = 15,311,512,736.35/129,559.94 - Step 6: Final answer
x = 118,180.92
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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.