Finding the Fourth Proportional to 128,306.88, 192,224.88 and 115,906.32
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Solution
The fourth proportional to 128,306.88, 192,224.88 and 115,906.32 is: 173,646.79
Step by Step Solution
- Step 1: Write the proportion equation
128,306.88 : 192,224.88 = 115,906.32 : x - Step 2: Convert to fraction form
128,306.88/192,224.88 = 115,906.32/x - Step 3: Cross multiply
128,306.88x = 192,224.88 × 115,906.32 - Step 4: Simplify right side
128,306.88x = 22,280,078,453.24 - Step 5: Solve for x
x = 22,280,078,453.24/128,306.88 - Step 6: Final answer
x = 173,646.79
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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.