Finding the Fourth Proportional to 138,421.44, 207,566.40 and 71,794.80
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Solution
The fourth proportional to 138,421.44, 207,566.40 and 71,794.80 is: 107,658.09
Step by Step Solution
- Step 1: Write the proportion equation
138,421.44 : 207,566.40 = 71,794.80 : x - Step 2: Convert to fraction form
138,421.44/207,566.40 = 71,794.80/x - Step 3: Cross multiply
138,421.44x = 207,566.40 × 71,794.80 - Step 4: Simplify right side
138,421.44x = 14,902,188,174.72 - Step 5: Solve for x
x = 14,902,188,174.72/138,421.44 - Step 6: Final answer
x = 107,658.09
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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.