Finding the Fourth Proportional to 135,138.48, 202,732.42 and 45,172.68
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Solution
The fourth proportional to 135,138.48, 202,732.42 and 45,172.68 is: 67,767.28
Step by Step Solution
- Step 1: Write the proportion equation
135,138.48 : 202,732.42 = 45,172.68 : x - Step 2: Convert to fraction form
135,138.48/202,732.42 = 45,172.68/x - Step 3: Cross multiply
135,138.48x = 202,732.42 × 45,172.68 - Step 4: Simplify right side
135,138.48x = 9,157,966,734.29 - Step 5: Solve for x
x = 9,157,966,734.29/135,138.48 - Step 6: Final answer
x = 67,767.28
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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.