Finding the Fourth Proportional to 103,990.21, 155,996.25 and 33,874.99
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Solution
The fourth proportional to 103,990.21, 155,996.25 and 33,874.99 is: 50,816.05
Step by Step Solution
- Step 1: Write the proportion equation
103,990.21 : 155,996.25 = 33,874.99 : x - Step 2: Convert to fraction form
103,990.21/155,996.25 = 33,874.99/x - Step 3: Cross multiply
103,990.21x = 155,996.25 × 33,874.99 - Step 4: Simplify right side
103,990.21x = 5,284,371,408.79 - Step 5: Solve for x
x = 5,284,371,408.79/103,990.21 - Step 6: Final answer
x = 50,816.05
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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.