Finding the Fourth Proportional to 198,636.94, 274,121.97 and 107,992.70
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Solution
The fourth proportional to 198,636.94, 274,121.97 and 107,992.70 is: 149,031.55
Step by Step Solution
- Step 1: Write the proportion equation
198,636.94 : 274,121.97 = 107,992.70 : x - Step 2: Convert to fraction form
198,636.94/274,121.97 = 107,992.70/x - Step 3: Cross multiply
198,636.94x = 274,121.97 × 107,992.70 - Step 4: Simplify right side
198,636.94x = 29,603,170,299.01 - Step 5: Solve for x
x = 29,603,170,299.01/198,636.94 - Step 6: Final answer
x = 149,031.55
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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.