Finding the Fourth Proportional to 137,183.40, 205,775.10 and 122,311.80
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Solution
The fourth proportional to 137,183.40, 205,775.10 and 122,311.80 is: 183,467.70
Step by Step Solution
- Step 1: Write the proportion equation
137,183.40 : 205,775.10 = 122,311.80 : x - Step 2: Convert to fraction form
137,183.40/205,775.10 = 122,311.80/x - Step 3: Cross multiply
137,183.40x = 205,775.10 × 122,311.80 - Step 4: Simplify right side
137,183.40x = 25,168,722,876.18 - Step 5: Solve for x
x = 25,168,722,876.18/137,183.40 - Step 6: Final answer
x = 183,467.70
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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.