Finding the Fourth Proportional to 115,408.70, 173,121.15 and 65,512.70
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Solution
The fourth proportional to 115,408.70, 173,121.15 and 65,512.70 is: 98,273.65
Step by Step Solution
- Step 1: Write the proportion equation
115,408.70 : 173,121.15 = 65,512.70 : x - Step 2: Convert to fraction form
115,408.70/173,121.15 = 65,512.70/x - Step 3: Cross multiply
115,408.70x = 173,121.15 × 65,512.70 - Step 4: Simplify right side
115,408.70x = 11,341,633,963.61 - Step 5: Solve for x
x = 11,341,633,963.61/115,408.70 - Step 6: Final answer
x = 98,273.65
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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.