Finding the Fourth Proportional to 151,369.38, 208,889.81 and 87,744.08
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Solution
The fourth proportional to 151,369.38, 208,889.81 and 87,744.08 is: 121,086.87
Step by Step Solution
- Step 1: Write the proportion equation
151,369.38 : 208,889.81 = 87,744.08 : x - Step 2: Convert to fraction form
151,369.38/208,889.81 = 87,744.08/x - Step 3: Cross multiply
151,369.38x = 208,889.81 × 87,744.08 - Step 4: Simplify right side
151,369.38x = 18,328,844,199.82 - Step 5: Solve for x
x = 18,328,844,199.82/151,369.38 - Step 6: Final answer
x = 121,086.87
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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.