Finding the Fourth Proportional to 139,571.68, 192,604.80 and 79,147.84
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Solution
The fourth proportional to 139,571.68, 192,604.80 and 79,147.84 is: 109,221.68
Step by Step Solution
- Step 1: Write the proportion equation
139,571.68 : 192,604.80 = 79,147.84 : x - Step 2: Convert to fraction form
139,571.68/192,604.80 = 79,147.84/x - Step 3: Cross multiply
139,571.68x = 192,604.80 × 79,147.84 - Step 4: Simplify right side
139,571.68x = 15,244,253,893.63 - Step 5: Solve for x
x = 15,244,253,893.63/139,571.68 - Step 6: Final answer
x = 109,221.68
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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.