Finding the Fourth Proportional to 157,183.20, 216,912.84 and 85,563.75
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Solution
The fourth proportional to 157,183.20, 216,912.84 and 85,563.75 is: 118,077.99
Step by Step Solution
- Step 1: Write the proportion equation
157,183.20 : 216,912.84 = 85,563.75 : x - Step 2: Convert to fraction form
157,183.20/216,912.84 = 85,563.75/x - Step 3: Cross multiply
157,183.20x = 216,912.84 × 85,563.75 - Step 4: Simplify right side
157,183.20x = 18,559,876,506.11 - Step 5: Solve for x
x = 18,559,876,506.11/157,183.20 - Step 6: Final answer
x = 118,077.99
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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.