Finding the Fourth Proportional to 128,331.36, 192,512.88 and 44,108.64
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Solution
The fourth proportional to 128,331.36, 192,512.88 and 44,108.64 is: 66,168.40
Step by Step Solution
- Step 1: Write the proportion equation
128,331.36 : 192,512.88 = 44,108.64 : x - Step 2: Convert to fraction form
128,331.36/192,512.88 = 44,108.64/x - Step 3: Cross multiply
128,331.36x = 192,512.88 × 44,108.64 - Step 4: Simplify right side
128,331.36x = 8,491,481,319.28 - Step 5: Solve for x
x = 8,491,481,319.28/128,331.36 - Step 6: Final answer
x = 66,168.40
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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.