Finding the Fourth Proportional to 106,142.40, 159,213.60 and 68,744.70
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Solution
The fourth proportional to 106,142.40, 159,213.60 and 68,744.70 is: 103,117.05
Step by Step Solution
- Step 1: Write the proportion equation
106,142.40 : 159,213.60 = 68,744.70 : x - Step 2: Convert to fraction form
106,142.40/159,213.60 = 68,744.70/x - Step 3: Cross multiply
106,142.40x = 159,213.60 × 68,744.70 - Step 4: Simplify right side
106,142.40x = 10,945,091,167.92 - Step 5: Solve for x
x = 10,945,091,167.92/106,142.40 - Step 6: Final answer
x = 103,117.05
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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.