Finding the Fourth Proportional to 128,998.62, 193,491.11 and 40,241.97
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Solution
The fourth proportional to 128,998.62, 193,491.11 and 40,241.97 is: 60,360.83
Step by Step Solution
- Step 1: Write the proportion equation
128,998.62 : 193,491.11 = 40,241.97 : x - Step 2: Convert to fraction form
128,998.62/193,491.11 = 40,241.97/x - Step 3: Cross multiply
128,998.62x = 193,491.11 × 40,241.97 - Step 4: Simplify right side
128,998.62x = 7,786,463,242.68 - Step 5: Solve for x
x = 7,786,463,242.68/128,998.62 - Step 6: Final answer
x = 60,360.83
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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.