Finding the Fourth Proportional to 106,578.92, 147,135.30 and 68,874.68
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Solution
The fourth proportional to 106,578.92, 147,135.30 and 68,874.68 is: 95,083.50
Step by Step Solution
- Step 1: Write the proportion equation
106,578.92 : 147,135.30 = 68,874.68 : x - Step 2: Convert to fraction form
106,578.92/147,135.30 = 68,874.68/x - Step 3: Cross multiply
106,578.92x = 147,135.30 × 68,874.68 - Step 4: Simplify right side
106,578.92x = 10,133,896,704.20 - Step 5: Solve for x
x = 10,133,896,704.20/106,578.92 - Step 6: Final answer
x = 95,083.50
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.