Finding the Fourth Proportional to 128,554.23, 192,757.51 and 68,508.78
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Solution
The fourth proportional to 128,554.23, 192,757.51 and 68,508.78 is: 102,723.82
Step by Step Solution
- Step 1: Write the proportion equation
128,554.23 : 192,757.51 = 68,508.78 : x - Step 2: Convert to fraction form
128,554.23/192,757.51 = 68,508.78/x - Step 3: Cross multiply
128,554.23x = 192,757.51 × 68,508.78 - Step 4: Simplify right side
128,554.23x = 13,205,580,882.15 - Step 5: Solve for x
x = 13,205,580,882.15/128,554.23 - Step 6: Final answer
x = 102,723.82
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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.