Finding the Fourth Proportional to 163,538.72, 225,685.44 and 99,007.08
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Solution
The fourth proportional to 163,538.72, 225,685.44 and 99,007.08 is: 136,630.99
Step by Step Solution
- Step 1: Write the proportion equation
163,538.72 : 225,685.44 = 99,007.08 : x - Step 2: Convert to fraction form
163,538.72/225,685.44 = 99,007.08/x - Step 3: Cross multiply
163,538.72x = 225,685.44 × 99,007.08 - Step 4: Simplify right side
163,538.72x = 22,344,456,412.92 - Step 5: Solve for x
x = 22,344,456,412.92/163,538.72 - Step 6: Final answer
x = 136,630.99
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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.