Finding the Fourth Proportional to 198,611,648.37, 274,122,021.72 and 131,512,257.21
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Solution
The fourth proportional to 198,611,648.37, 274,122,021.72 and 131,512,257.21 is: 181,512,041.83
Step by Step Solution
- Step 1: Write the proportion equation
198,611,648.37 : 274,122,021.72 = 131,512,257.21 : x - Step 2: Convert to fraction form
198,611,648.37/274,122,021.72 = 131,512,257.21/x - Step 3: Cross multiply
198,611,648.37x = 274,122,021.72 × 131,512,257.21 - Step 4: Simplify right side
198,611,648.37x = 36,050,405,827,365,848 - Step 5: Solve for x
x = 36,050,405,827,365,848/198,611,648.37 - Step 6: Final answer
x = 181,512,041.83
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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.