Finding the Fourth Proportional to 139,378.73, 192,342.87 and 75,716.57
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Solution
The fourth proportional to 139,378.73, 192,342.87 and 75,716.57 is: 104,488.99
Step by Step Solution
- Step 1: Write the proportion equation
139,378.73 : 192,342.87 = 75,716.57 : x - Step 2: Convert to fraction form
139,378.73/192,342.87 = 75,716.57/x - Step 3: Cross multiply
139,378.73x = 192,342.87 × 75,716.57 - Step 4: Simplify right side
139,378.73x = 14,563,542,861.21 - Step 5: Solve for x
x = 14,563,542,861.21/139,378.73 - Step 6: Final answer
x = 104,488.99
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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.