Finding the Fourth Proportional to 157,755.53, 217,702.49 and 86,135.54
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Solution
The fourth proportional to 157,755.53, 217,702.49 and 86,135.54 is: 118,866.96
Step by Step Solution
- Step 1: Write the proportion equation
157,755.53 : 217,702.49 = 86,135.54 : x - Step 2: Convert to fraction form
157,755.53/217,702.49 = 86,135.54/x - Step 3: Cross multiply
157,755.53x = 217,702.49 × 86,135.54 - Step 4: Simplify right side
157,755.53x = 18,751,920,016.30 - Step 5: Solve for x
x = 18,751,920,016.30/157,755.53 - Step 6: Final answer
x = 118,866.96
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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.