Finding the Fourth Proportional to 129,858.80, 179,174.21 and 89,559.68
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Solution
The fourth proportional to 129,858.80, 179,174.21 and 89,559.68 is: 123,571.02
Step by Step Solution
- Step 1: Write the proportion equation
129,858.80 : 179,174.21 = 89,559.68 : x - Step 2: Convert to fraction form
129,858.80/179,174.21 = 89,559.68/x - Step 3: Cross multiply
129,858.80x = 179,174.21 × 89,559.68 - Step 4: Simplify right side
129,858.80x = 16,046,783,568.18 - Step 5: Solve for x
x = 16,046,783,568.18/129,858.80 - Step 6: Final answer
x = 123,571.02
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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.