Finding the Fourth Proportional to 166,863.65, 230,087.39 and 128,538.09
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Solution
The fourth proportional to 166,863.65, 230,087.39 and 128,538.09 is: 177,240.48
Step by Step Solution
- Step 1: Write the proportion equation
166,863.65 : 230,087.39 = 128,538.09 : x - Step 2: Convert to fraction form
166,863.65/230,087.39 = 128,538.09/x - Step 3: Cross multiply
166,863.65x = 230,087.39 × 128,538.09 - Step 4: Simplify right side
166,863.65x = 29,574,993,000.99 - Step 5: Solve for x
x = 29,574,993,000.99/166,863.65 - Step 6: Final answer
x = 177,240.48
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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.