Finding the Fourth Proportional to 138,636.73, 207,955.12 and 33,455.70
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Solution
The fourth proportional to 138,636.73, 207,955.12 and 33,455.70 is: 50,183.56
Step by Step Solution
- Step 1: Write the proportion equation
138,636.73 : 207,955.12 = 33,455.70 : x - Step 2: Convert to fraction form
138,636.73/207,955.12 = 33,455.70/x - Step 3: Cross multiply
138,636.73x = 207,955.12 × 33,455.70 - Step 4: Simplify right side
138,636.73x = 6,957,284,108.18 - Step 5: Solve for x
x = 6,957,284,108.18/138,636.73 - Step 6: Final answer
x = 50,183.56
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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.