Finding the Fourth Proportional to 81,170.26, 121,160.97 and 71,583.05
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Solution
The fourth proportional to 81,170.26, 121,160.97 and 71,583.05 is: 106,850.37
Step by Step Solution
- Step 1: Write the proportion equation
81,170.26 : 121,160.97 = 71,583.05 : x - Step 2: Convert to fraction form
81,170.26/121,160.97 = 71,583.05/x - Step 3: Cross multiply
81,170.26x = 121,160.97 × 71,583.05 - Step 4: Simplify right side
81,170.26x = 8,673,072,297.18 - Step 5: Solve for x
x = 8,673,072,297.18/81,170.26 - Step 6: Final answer
x = 106,850.37
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.