Finding the Fourth Proportional to 106,689.87, 160,135.26 and 54,137.07
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Solution
The fourth proportional to 106,689.87, 160,135.26 and 54,137.07 is: 81,256.58
Step by Step Solution
- Step 1: Write the proportion equation
106,689.87 : 160,135.26 = 54,137.07 : x - Step 2: Convert to fraction form
106,689.87/160,135.26 = 54,137.07/x - Step 3: Cross multiply
106,689.87x = 160,135.26 × 54,137.07 - Step 4: Simplify right side
106,689.87x = 8,669,253,780.09 - Step 5: Solve for x
x = 8,669,253,780.09/106,689.87 - Step 6: Final answer
x = 81,256.58
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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.