Finding the Fourth Proportional to 115,017,163.49, 172,397,953.36 and 87,633,177.39
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Solution
The fourth proportional to 115,017,163.49, 172,397,953.36 and 87,633,177.39 is: 131,352,399.68
Step by Step Solution
- Step 1: Write the proportion equation
115,017,163.49 : 172,397,953.36 = 87,633,177.39 : x - Step 2: Convert to fraction form
115,017,163.49/172,397,953.36 = 87,633,177.39/x - Step 3: Cross multiply
115,017,163.49x = 172,397,953.36 × 87,633,177.39 - Step 4: Simplify right side
115,017,163.49x = 15,107,780,428,469,828 - Step 5: Solve for x
x = 15,107,780,428,469,828/115,017,163.49 - Step 6: Final answer
x = 131,352,399.68
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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.