Finding the Fourth Proportional to 127,651.21, 191,248.39 and 71,425.87
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Solution
The fourth proportional to 127,651.21, 191,248.39 and 71,425.87 is: 107,010.99
Step by Step Solution
- Step 1: Write the proportion equation
127,651.21 : 191,248.39 = 71,425.87 : x - Step 2: Convert to fraction form
127,651.21/191,248.39 = 71,425.87/x - Step 3: Cross multiply
127,651.21x = 191,248.39 × 71,425.87 - Step 4: Simplify right side
127,651.21x = 13,660,082,641.85 - Step 5: Solve for x
x = 13,660,082,641.85/127,651.21 - Step 6: Final answer
x = 107,010.99
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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.