Finding the Fourth Proportional to 139,838.20, 209,616.84 and 44,998.68
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Solution
The fourth proportional to 139,838.20, 209,616.84 and 44,998.68 is: 67,452.82
Step by Step Solution
- Step 1: Write the proportion equation
139,838.20 : 209,616.84 = 44,998.68 : x - Step 2: Convert to fraction form
139,838.20/209,616.84 = 44,998.68/x - Step 3: Cross multiply
139,838.20x = 209,616.84 × 44,998.68 - Step 4: Simplify right side
139,838.20x = 9,432,481,105.77 - Step 5: Solve for x
x = 9,432,481,105.77/139,838.20 - Step 6: Final answer
x = 67,452.82
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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.