Finding the Fourth Proportional to 159,135.48, 219,601.94 and 87,515.28
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Solution
The fourth proportional to 159,135.48, 219,601.94 and 87,515.28 is: 120,768.32
Step by Step Solution
- Step 1: Write the proportion equation
159,135.48 : 219,601.94 = 87,515.28 : x - Step 2: Convert to fraction form
159,135.48/219,601.94 = 87,515.28/x - Step 3: Cross multiply
159,135.48x = 219,601.94 × 87,515.28 - Step 4: Simplify right side
159,135.48x = 19,218,524,830.07 - Step 5: Solve for x
x = 19,218,524,830.07/159,135.48 - Step 6: Final answer
x = 120,768.32
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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.