Finding the Fourth Proportional to 129,021.20, 193,272.60 and 73,552.40
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Solution
The fourth proportional to 129,021.20, 193,272.60 and 73,552.40 is: 110,180.84
Step by Step Solution
- Step 1: Write the proportion equation
129,021.20 : 193,272.60 = 73,552.40 : x - Step 2: Convert to fraction form
129,021.20/193,272.60 = 73,552.40/x - Step 3: Cross multiply
129,021.20x = 193,272.60 × 73,552.40 - Step 4: Simplify right side
129,021.20x = 14,215,663,584.24 - Step 5: Solve for x
x = 14,215,663,584.24/129,021.20 - Step 6: Final answer
x = 110,180.84
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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.