Finding the Fourth Proportional to 199,163.21, 274,858.82 and 121,672.02
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Solution
The fourth proportional to 199,163.21, 274,858.82 and 121,672.02 is: 167,915.70
Step by Step Solution
- Step 1: Write the proportion equation
199,163.21 : 274,858.82 = 121,672.02 : x - Step 2: Convert to fraction form
199,163.21/274,858.82 = 121,672.02/x - Step 3: Cross multiply
199,163.21x = 274,858.82 × 121,672.02 - Step 4: Simplify right side
199,163.21x = 33,442,628,722.85 - Step 5: Solve for x
x = 33,442,628,722.85/199,163.21 - Step 6: Final answer
x = 167,915.70
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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.