Finding the Fourth Proportional to 151,861.55, 209,577.11 and 87,330.02
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Solution
The fourth proportional to 151,861.55, 209,577.11 and 87,330.02 is: 120,520.12
Step by Step Solution
- Step 1: Write the proportion equation
151,861.55 : 209,577.11 = 87,330.02 : x - Step 2: Convert to fraction form
151,861.55/209,577.11 = 87,330.02/x - Step 3: Cross multiply
151,861.55x = 209,577.11 × 87,330.02 - Step 4: Simplify right side
151,861.55x = 18,302,371,723.31 - Step 5: Solve for x
x = 18,302,371,723.31/151,861.55 - Step 6: Final answer
x = 120,520.12
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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.