Finding the Fourth Proportional to 128,575.31, 192,893.76 and 53,653.91
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Solution
The fourth proportional to 128,575.31, 192,893.76 and 53,653.91 is: 80,493.71
Step by Step Solution
- Step 1: Write the proportion equation
128,575.31 : 192,893.76 = 53,653.91 : x - Step 2: Convert to fraction form
128,575.31/192,893.76 = 53,653.91/x - Step 3: Cross multiply
128,575.31x = 192,893.76 × 53,653.91 - Step 4: Simplify right side
128,575.31x = 10,349,503,474.13 - Step 5: Solve for x
x = 10,349,503,474.13/128,575.31 - Step 6: Final answer
x = 80,493.71
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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.