Finding the Fourth Proportional to 115,187,165.40, 172,780,748.10 and 84,576,163.80
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Solution
The fourth proportional to 115,187,165.40, 172,780,748.10 and 84,576,163.80 is: 126,864,245.70
Step by Step Solution
- Step 1: Write the proportion equation
115,187,165.40 : 172,780,748.10 = 84,576,163.80 : x - Step 2: Convert to fraction form
115,187,165.40/172,780,748.10 = 84,576,163.80/x - Step 3: Cross multiply
115,187,165.40x = 172,780,748.10 × 84,576,163.80 - Step 4: Simplify right side
115,187,165.40x = 14,613,132,852,792,138 - Step 5: Solve for x
x = 14,613,132,852,792,138/115,187,165.40 - Step 6: Final answer
x = 126,864,245.70
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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.