Finding the Fourth Proportional to 121,908.75, 182,805.69 and 79,144.99
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Solution
The fourth proportional to 121,908.75, 182,805.69 and 79,144.99 is: 118,680.20
Step by Step Solution
- Step 1: Write the proportion equation
121,908.75 : 182,805.69 = 79,144.99 : x - Step 2: Convert to fraction form
121,908.75/182,805.69 = 79,144.99/x - Step 3: Cross multiply
121,908.75x = 182,805.69 × 79,144.99 - Step 4: Simplify right side
121,908.75x = 14,468,154,506.99 - Step 5: Solve for x
x = 14,468,154,506.99/121,908.75 - Step 6: Final answer
x = 118,680.20
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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.