Finding the Fourth Proportional to 188,001.12, 281,949.84 and 81,420.96
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Solution
The fourth proportional to 188,001.12, 281,949.84 and 81,420.96 is: 122,108.99
Step by Step Solution
- Step 1: Write the proportion equation
188,001.12 : 281,949.84 = 81,420.96 : x - Step 2: Convert to fraction form
188,001.12/281,949.84 = 81,420.96/x - Step 3: Cross multiply
188,001.12x = 281,949.84 × 81,420.96 - Step 4: Simplify right side
188,001.12x = 22,956,626,644.65 - Step 5: Solve for x
x = 22,956,626,644.65/188,001.12 - Step 6: Final answer
x = 122,108.99
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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.