Finding the Fourth Proportional to 159,391.13, 219,959.75 and 87,770.99
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Solution
The fourth proportional to 159,391.13, 219,959.75 and 87,770.99 is: 121,123.97
Step by Step Solution
- Step 1: Write the proportion equation
159,391.13 : 219,959.75 = 87,770.99 : x - Step 2: Convert to fraction form
159,391.13/219,959.75 = 87,770.99/x - Step 3: Cross multiply
159,391.13x = 219,959.75 × 87,770.99 - Step 4: Simplify right side
159,391.13x = 19,306,085,786.98 - Step 5: Solve for x
x = 19,306,085,786.98/159,391.13 - Step 6: Final answer
x = 121,123.97
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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.