Finding the Fourth Proportional to 205,057.48, 307,153.86 and 130,138.12
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Solution
The fourth proportional to 205,057.48, 307,153.86 and 130,138.12 is: 194,932.79
Step by Step Solution
- Step 1: Write the proportion equation
205,057.48 : 307,153.86 = 130,138.12 : x - Step 2: Convert to fraction form
205,057.48/307,153.86 = 130,138.12/x - Step 3: Cross multiply
205,057.48x = 307,153.86 × 130,138.12 - Step 4: Simplify right side
205,057.48x = 39,972,425,891.14 - Step 5: Solve for x
x = 39,972,425,891.14/205,057.48 - Step 6: Final answer
x = 194,932.79
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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.