Finding the Fourth Proportional to 203,775.12, 305,564.36 and 85,414.68
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Solution
The fourth proportional to 203,775.12, 305,564.36 and 85,414.68 is: 128,080.80
Step by Step Solution
- Step 1: Write the proportion equation
203,775.12 : 305,564.36 = 85,414.68 : x - Step 2: Convert to fraction form
203,775.12/305,564.36 = 85,414.68/x - Step 3: Cross multiply
203,775.12x = 305,564.36 × 85,414.68 - Step 4: Simplify right side
203,775.12x = 26,099,680,776.17 - Step 5: Solve for x
x = 26,099,680,776.17/203,775.12 - Step 6: Final answer
x = 128,080.80
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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.