Finding the Fourth Proportional to 133,183.14, 183,785.19 and 72,741.78
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Solution
The fourth proportional to 133,183.14, 183,785.19 and 72,741.78 is: 100,379.54
Step by Step Solution
- Step 1: Write the proportion equation
133,183.14 : 183,785.19 = 72,741.78 : x - Step 2: Convert to fraction form
133,183.14/183,785.19 = 72,741.78/x - Step 3: Cross multiply
133,183.14x = 183,785.19 × 72,741.78 - Step 4: Simplify right side
133,183.14x = 13,368,861,858.24 - Step 5: Solve for x
x = 13,368,861,858.24/133,183.14 - Step 6: Final answer
x = 100,379.54
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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.