Finding the Fourth Proportional to 159,137.21, 219,604.97 and 87,517.23
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Solution
The fourth proportional to 159,137.21, 219,604.97 and 87,517.23 is: 120,771.37
Step by Step Solution
- Step 1: Write the proportion equation
159,137.21 : 219,604.97 = 87,517.23 : x - Step 2: Convert to fraction form
159,137.21/219,604.97 = 87,517.23/x - Step 3: Cross multiply
159,137.21x = 219,604.97 × 87,517.23 - Step 4: Simplify right side
159,137.21x = 19,219,218,231.05 - Step 5: Solve for x
x = 19,219,218,231.05/159,137.21 - Step 6: Final answer
x = 120,771.37
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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.