Finding the Fourth Proportional to 121,257.87, 181,912.01 and 51,137.79
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Solution
The fourth proportional to 121,257.87, 181,912.01 and 51,137.79 is: 76,717.31
Step by Step Solution
- Step 1: Write the proportion equation
121,257.87 : 181,912.01 = 51,137.79 : x - Step 2: Convert to fraction form
121,257.87/181,912.01 = 51,137.79/x - Step 3: Cross multiply
121,257.87x = 181,912.01 × 51,137.79 - Step 4: Simplify right side
121,257.87x = 9,302,577,910.17 - Step 5: Solve for x
x = 9,302,577,910.17/121,257.87 - Step 6: Final answer
x = 76,717.31
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.