Finding the Fourth Proportional to 115,942,721.36, 160,001,287.61 and 66,383,855.19
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Solution
The fourth proportional to 115,942,721.36, 160,001,287.61 and 66,383,855.19 is: 91,609,910.33
Step by Step Solution
- Step 1: Write the proportion equation
115,942,721.36 : 160,001,287.61 = 66,383,855.19 : x - Step 2: Convert to fraction form
115,942,721.36/160,001,287.61 = 66,383,855.19/x - Step 3: Cross multiply
115,942,721.36x = 160,001,287.61 × 66,383,855.19 - Step 4: Simplify right side
115,942,721.36x = 10,621,502,306,583,860 - Step 5: Solve for x
x = 10,621,502,306,583,860/115,942,721.36 - Step 6: Final answer
x = 91,609,910.33
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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.