Finding the Fourth Proportional to 163,313.20, 225,396.84 and 99,687.88
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Solution
The fourth proportional to 163,313.20, 225,396.84 and 99,687.88 is: 137,584.31
Step by Step Solution
- Step 1: Write the proportion equation
163,313.20 : 225,396.84 = 99,687.88 : x - Step 2: Convert to fraction form
163,313.20/225,396.84 = 99,687.88/x - Step 3: Cross multiply
163,313.20x = 225,396.84 × 99,687.88 - Step 4: Simplify right side
163,313.20x = 22,469,333,138.30 - Step 5: Solve for x
x = 22,469,333,138.30/163,313.20 - Step 6: Final answer
x = 137,584.31
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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.