Finding the Fourth Proportional to 208,022.96, 311,751.60 and 87,980.08
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Solution
The fourth proportional to 208,022.96, 311,751.60 and 87,980.08 is: 131,850.50
Step by Step Solution
- Step 1: Write the proportion equation
208,022.96 : 311,751.60 = 87,980.08 : x - Step 2: Convert to fraction form
208,022.96/311,751.60 = 87,980.08/x - Step 3: Cross multiply
208,022.96x = 311,751.60 × 87,980.08 - Step 4: Simplify right side
208,022.96x = 27,427,930,708.13 - Step 5: Solve for x
x = 27,427,930,708.13/208,022.96 - Step 6: Final answer
x = 131,850.50
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1.5x scale
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.