Finding the Fourth Proportional to 128,576.75, 192,895.91 and 53,655.21
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Solution
The fourth proportional to 128,576.75, 192,895.91 and 53,655.21 is: 80,495.66
Step by Step Solution
- Step 1: Write the proportion equation
128,576.75 : 192,895.91 = 53,655.21 : x - Step 2: Convert to fraction form
128,576.75/192,895.91 = 53,655.21/x - Step 3: Cross multiply
128,576.75x = 192,895.91 × 53,655.21 - Step 4: Simplify right side
128,576.75x = 10,349,870,290.92 - Step 5: Solve for x
x = 10,349,870,290.92/128,576.75 - Step 6: Final answer
x = 80,495.66
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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.