Finding the Fourth Proportional to 128,259.80, 192,424.94 and 53,414.99
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Solution
The fourth proportional to 128,259.80, 192,424.94 and 53,414.99 is: 80,137.16
Step by Step Solution
- Step 1: Write the proportion equation
128,259.80 : 192,424.94 = 53,414.99 : x - Step 2: Convert to fraction form
128,259.80/192,424.94 = 53,414.99/x - Step 3: Cross multiply
128,259.80x = 192,424.94 × 53,414.99 - Step 4: Simplify right side
128,259.80x = 10,278,376,245.85 - Step 5: Solve for x
x = 10,278,376,245.85/128,259.80 - Step 6: Final answer
x = 80,137.16
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.