Finding the Fourth Proportional to 170,821.28, 235,715.46 and 99,187.31
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Solution
The fourth proportional to 170,821.28, 235,715.46 and 99,187.31 is: 136,868.09
Step by Step Solution
- Step 1: Write the proportion equation
170,821.28 : 235,715.46 = 99,187.31 : x - Step 2: Convert to fraction form
170,821.28/235,715.46 = 99,187.31/x - Step 3: Cross multiply
170,821.28x = 235,715.46 × 99,187.31 - Step 4: Simplify right side
170,821.28x = 23,379,981,224.24 - Step 5: Solve for x
x = 23,379,981,224.24/170,821.28 - Step 6: Final answer
x = 136,868.09
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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.