Finding the Fourth Proportional to 203,425.75, 305,138.67 and 78,766.75
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Solution
The fourth proportional to 203,425.75, 305,138.67 and 78,766.75 is: 118,150.14
Step by Step Solution
- Step 1: Write the proportion equation
203,425.75 : 305,138.67 = 78,766.75 : x - Step 2: Convert to fraction form
203,425.75/305,138.67 = 78,766.75/x - Step 3: Cross multiply
203,425.75x = 305,138.67 × 78,766.75 - Step 4: Simplify right side
203,425.75x = 24,034,781,335.22 - Step 5: Solve for x
x = 24,034,781,335.22/203,425.75 - Step 6: Final answer
x = 118,150.14
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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.