Finding the Fourth Proportional to 135,243.20, 202,864.80 and 82,755.20
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Solution
The fourth proportional to 135,243.20, 202,864.80 and 82,755.20 is: 124,132.80
Step by Step Solution
- Step 1: Write the proportion equation
135,243.20 : 202,864.80 = 82,755.20 : x - Step 2: Convert to fraction form
135,243.20/202,864.80 = 82,755.20/x - Step 3: Cross multiply
135,243.20x = 202,864.80 × 82,755.20 - Step 4: Simplify right side
135,243.20x = 16,788,117,096.96 - Step 5: Solve for x
x = 16,788,117,096.96/135,243.20 - Step 6: Final answer
x = 124,132.80
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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.