Finding the Fourth Proportional to 135,310.85, 203,153.99 and 85,243.13
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Solution
The fourth proportional to 135,310.85, 203,153.99 and 85,243.13 is: 127,982.95
Step by Step Solution
- Step 1: Write the proportion equation
135,310.85 : 203,153.99 = 85,243.13 : x - Step 2: Convert to fraction form
135,310.85/203,153.99 = 85,243.13/x - Step 3: Cross multiply
135,310.85x = 203,153.99 × 85,243.13 - Step 4: Simplify right side
135,310.85x = 17,317,481,979.59 - Step 5: Solve for x
x = 17,317,481,979.59/135,310.85 - Step 6: Final answer
x = 127,982.95
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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.