Finding the Fourth Proportional to 128,348.18, 192,361.80 and 61,770.44
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Solution
The fourth proportional to 128,348.18, 192,361.80 and 61,770.44 is: 92,578.43
Step by Step Solution
- Step 1: Write the proportion equation
128,348.18 : 192,361.80 = 61,770.44 : x - Step 2: Convert to fraction form
128,348.18/192,361.80 = 61,770.44/x - Step 3: Cross multiply
128,348.18x = 192,361.80 × 61,770.44 - Step 4: Simplify right side
128,348.18x = 11,882,273,025.19 - Step 5: Solve for x
x = 11,882,273,025.19/128,348.18 - Step 6: Final answer
x = 92,578.43
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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.