Finding the Fourth Proportional to 198,611,623.56, 274,121,986.06 and 131,512,231.92
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Solution
The fourth proportional to 198,611,623.56, 274,121,986.06 and 131,512,231.92 is: 181,512,005.99
Step by Step Solution
- Step 1: Write the proportion equation
198,611,623.56 : 274,121,986.06 = 131,512,231.92 : x - Step 2: Convert to fraction form
198,611,623.56/274,121,986.06 = 131,512,231.92/x - Step 3: Cross multiply
198,611,623.56x = 274,121,986.06 × 131,512,231.92 - Step 4: Simplify right side
198,611,623.56x = 36,050,394,205,093,728 - Step 5: Solve for x
x = 36,050,394,205,093,728/198,611,623.56 - Step 6: Final answer
x = 181,512,005.99
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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.