Finding the Fourth Proportional to 128,560.26, 177,415.02 and 74,082.48
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Solution
The fourth proportional to 128,560.26, 177,415.02 and 74,082.48 is: 102,234.89
Step by Step Solution
- Step 1: Write the proportion equation
128,560.26 : 177,415.02 = 74,082.48 : x - Step 2: Convert to fraction form
128,560.26/177,415.02 = 74,082.48/x - Step 3: Cross multiply
128,560.26x = 177,415.02 × 74,082.48 - Step 4: Simplify right side
128,560.26x = 13,143,344,670.85 - Step 5: Solve for x
x = 13,143,344,670.85/128,560.26 - Step 6: Final answer
x = 102,234.89
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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.