Finding the Fourth Proportional to 139,724.80, 192,879.84 and 83,141.44
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Solution
The fourth proportional to 139,724.80, 192,879.84 and 83,141.44 is: 114,770.66
Step by Step Solution
- Step 1: Write the proportion equation
139,724.80 : 192,879.84 = 83,141.44 : x - Step 2: Convert to fraction form
139,724.80/192,879.84 = 83,141.44/x - Step 3: Cross multiply
139,724.80x = 192,879.84 × 83,141.44 - Step 4: Simplify right side
139,724.80x = 16,036,307,644.57 - Step 5: Solve for x
x = 16,036,307,644.57/139,724.80 - Step 6: Final answer
x = 114,770.66
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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.