Finding the Fourth Proportional to 115,309.82, 173,021.23 and 77,382.99
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Solution
The fourth proportional to 115,309.82, 173,021.23 and 77,382.99 is: 116,112.40
Step by Step Solution
- Step 1: Write the proportion equation
115,309.82 : 173,021.23 = 77,382.99 : x - Step 2: Convert to fraction form
115,309.82/173,021.23 = 77,382.99/x - Step 3: Cross multiply
115,309.82x = 173,021.23 × 77,382.99 - Step 4: Simplify right side
115,309.82x = 13,388,900,110.88 - Step 5: Solve for x
x = 13,388,900,110.88/115,309.82 - Step 6: Final answer
x = 116,112.40
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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.