Finding the Fourth Proportional to 133,163.87, 183,552.68 and 90,129.78
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Solution
The fourth proportional to 133,163.87, 183,552.68 and 90,129.78 is: 124,234.63
Step by Step Solution
- Step 1: Write the proportion equation
133,163.87 : 183,552.68 = 90,129.78 : x - Step 2: Convert to fraction form
133,163.87/183,552.68 = 90,129.78/x - Step 3: Cross multiply
133,163.87x = 183,552.68 × 90,129.78 - Step 4: Simplify right side
133,163.87x = 16,543,562,892.13 - Step 5: Solve for x
x = 16,543,562,892.13/133,163.87 - Step 6: Final answer
x = 124,234.63
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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.