Finding the Fourth Proportional to 143,571.05, 198,129.94 and 79,047.80
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Solution
The fourth proportional to 143,571.05, 198,129.94 and 79,047.80 is: 109,087.01
Step by Step Solution
- Step 1: Write the proportion equation
143,571.05 : 198,129.94 = 79,047.80 : x - Step 2: Convert to fraction form
143,571.05/198,129.94 = 79,047.80/x - Step 3: Cross multiply
143,571.05x = 198,129.94 × 79,047.80 - Step 4: Simplify right side
143,571.05x = 15,661,735,871.13 - Step 5: Solve for x
x = 15,661,735,871.13/143,571.05 - Step 6: Final answer
x = 109,087.01
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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.