Finding the Fourth Proportional to 129,771.24, 194,305.12 and 67,310.52
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Solution
The fourth proportional to 129,771.24, 194,305.12 and 67,310.52 is: 100,783.33
Step by Step Solution
- Step 1: Write the proportion equation
129,771.24 : 194,305.12 = 67,310.52 : x - Step 2: Convert to fraction form
129,771.24/194,305.12 = 67,310.52/x - Step 3: Cross multiply
129,771.24x = 194,305.12 × 67,310.52 - Step 4: Simplify right side
129,771.24x = 13,078,778,220.77 - Step 5: Solve for x
x = 13,078,778,220.77/129,771.24 - Step 6: Final answer
x = 100,783.33
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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.