Finding the Fourth Proportional to 128,168.73, 192,190.23 and 74,874.09
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Solution
The fourth proportional to 128,168.73, 192,190.23 and 74,874.09 is: 112,274.41
Step by Step Solution
- Step 1: Write the proportion equation
128,168.73 : 192,190.23 = 74,874.09 : x - Step 2: Convert to fraction form
128,168.73/192,190.23 = 74,874.09/x - Step 3: Cross multiply
128,168.73x = 192,190.23 × 74,874.09 - Step 4: Simplify right side
128,168.73x = 14,390,068,578.14 - Step 5: Solve for x
x = 14,390,068,578.14/128,168.73 - Step 6: Final answer
x = 112,274.41
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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.