Finding the Fourth Proportional to 139,553.31, 192,583.78 and 75,891.09
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Solution
The fourth proportional to 139,553.31, 192,583.78 and 75,891.09 is: 104,729.82
Step by Step Solution
- Step 1: Write the proportion equation
139,553.31 : 192,583.78 = 75,891.09 : x - Step 2: Convert to fraction form
139,553.31/192,583.78 = 75,891.09/x - Step 3: Cross multiply
139,553.31x = 192,583.78 × 75,891.09 - Step 4: Simplify right side
139,553.31x = 14,615,393,512.98 - Step 5: Solve for x
x = 14,615,393,512.98/139,553.31 - Step 6: Final answer
x = 104,729.82
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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.