Finding the Fourth Proportional to 127,996.21, 191,997.09 and 39,247.75
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Solution
The fourth proportional to 127,996.21, 191,997.09 and 39,247.75 is: 58,872.48
Step by Step Solution
- Step 1: Write the proportion equation
127,996.21 : 191,997.09 = 39,247.75 : x - Step 2: Convert to fraction form
127,996.21/191,997.09 = 39,247.75/x - Step 3: Cross multiply
127,996.21x = 191,997.09 × 39,247.75 - Step 4: Simplify right side
127,996.21x = 7,535,454,072.80 - Step 5: Solve for x
x = 7,535,454,072.80/127,996.21 - Step 6: Final answer
x = 58,872.48
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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.