Finding the Fourth Proportional to 140,722.36, 194,215.30 and 80,279.08
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Solution
The fourth proportional to 140,722.36, 194,215.30 and 80,279.08 is: 110,795.65
Step by Step Solution
- Step 1: Write the proportion equation
140,722.36 : 194,215.30 = 80,279.08 : x - Step 2: Convert to fraction form
140,722.36/194,215.30 = 80,279.08/x - Step 3: Cross multiply
140,722.36x = 194,215.30 × 80,279.08 - Step 4: Simplify right side
140,722.36x = 15,591,425,605.92 - Step 5: Solve for x
x = 15,591,425,605.92/140,722.36 - Step 6: Final answer
x = 110,795.65
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.