Finding the Fourth Proportional to 129,898.60, 194,847.90 and 122,122.60
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Solution
The fourth proportional to 129,898.60, 194,847.90 and 122,122.60 is: 183,183.90
Step by Step Solution
- Step 1: Write the proportion equation
129,898.60 : 194,847.90 = 122,122.60 : x - Step 2: Convert to fraction form
129,898.60/194,847.90 = 122,122.60/x - Step 3: Cross multiply
129,898.60x = 194,847.90 × 122,122.60 - Step 4: Simplify right side
129,898.60x = 23,795,332,152.54 - Step 5: Solve for x
x = 23,795,332,152.54/129,898.60 - Step 6: Final answer
x = 183,183.90
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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.