Finding the Fourth Proportional to 163,052.60, 225,009.09 and 91,431.05
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Solution
The fourth proportional to 163,052.60, 225,009.09 and 91,431.05 is: 126,172.88
Step by Step Solution
- Step 1: Write the proportion equation
163,052.60 : 225,009.09 = 91,431.05 : x - Step 2: Convert to fraction form
163,052.60/225,009.09 = 91,431.05/x - Step 3: Cross multiply
163,052.60x = 225,009.09 × 91,431.05 - Step 4: Simplify right side
163,052.60x = 20,572,816,233.20 - Step 5: Solve for x
x = 20,572,816,233.20/163,052.60 - Step 6: Final answer
x = 126,172.88
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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.