Finding the Fourth Proportional to 212,631.09, 318,949.01 and 91,035.26
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Solution
The fourth proportional to 212,631.09, 318,949.01 and 91,035.26 is: 136,553.90
Step by Step Solution
- Step 1: Write the proportion equation
212,631.09 : 318,949.01 = 91,035.26 : x - Step 2: Convert to fraction form
212,631.09/318,949.01 = 91,035.26/x - Step 3: Cross multiply
212,631.09x = 318,949.01 × 91,035.26 - Step 4: Simplify right side
212,631.09x = 29,035,604,002.17 - Step 5: Solve for x
x = 29,035,604,002.17/212,631.09 - Step 6: Final answer
x = 136,553.90
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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.