Finding the Fourth Proportional to 131,819.73, 181,910.31 and 71,388.99
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Solution
The fourth proportional to 131,819.73, 181,910.31 and 71,388.99 is: 98,516.31
Step by Step Solution
- Step 1: Write the proportion equation
131,819.73 : 181,910.31 = 71,388.99 : x - Step 2: Convert to fraction form
131,819.73/181,910.31 = 71,388.99/x - Step 3: Cross multiply
131,819.73x = 181,910.31 × 71,388.99 - Step 4: Simplify right side
131,819.73x = 12,986,393,301.49 - Step 5: Solve for x
x = 12,986,393,301.49/131,819.73 - Step 6: Final answer
x = 98,516.31
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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.