Finding the Fourth Proportional to 188,207.78, 282,138.38 and 81,524.70
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Solution
The fourth proportional to 188,207.78, 282,138.38 and 81,524.70 is: 122,211.99
Step by Step Solution
- Step 1: Write the proportion equation
188,207.78 : 282,138.38 = 81,524.70 : x - Step 2: Convert to fraction form
188,207.78/282,138.38 = 81,524.70/x - Step 3: Cross multiply
188,207.78x = 282,138.38 × 81,524.70 - Step 4: Simplify right side
188,207.78x = 23,001,246,380.36 - Step 5: Solve for x
x = 23,001,246,380.36/188,207.78 - Step 6: Final answer
x = 122,211.99
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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.