Finding the Fourth Proportional to 142,481.80, 213,722.70 and 68,753.80
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Solution
The fourth proportional to 142,481.80, 213,722.70 and 68,753.80 is: 103,130.70
Step by Step Solution
- Step 1: Write the proportion equation
142,481.80 : 213,722.70 = 68,753.80 : x - Step 2: Convert to fraction form
142,481.80/213,722.70 = 68,753.80/x - Step 3: Cross multiply
142,481.80x = 213,722.70 × 68,753.80 - Step 4: Simplify right side
142,481.80x = 14,694,247,771.26 - Step 5: Solve for x
x = 14,694,247,771.26/142,481.80 - Step 6: Final answer
x = 103,130.70
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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.