Finding the Fourth Proportional to 128,739.26, 192,704.96 and 88,523.58
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Solution
The fourth proportional to 128,739.26, 192,704.96 and 88,523.58 is: 132,507.62
Step by Step Solution
- Step 1: Write the proportion equation
128,739.26 : 192,704.96 = 88,523.58 : x - Step 2: Convert to fraction form
128,739.26/192,704.96 = 88,523.58/x - Step 3: Cross multiply
128,739.26x = 192,704.96 × 88,523.58 - Step 4: Simplify right side
128,739.26x = 17,058,932,942.96 - Step 5: Solve for x
x = 17,058,932,942.96/128,739.26 - Step 6: Final answer
x = 132,507.62
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.