Finding the Fourth Proportional to 128,819.63, 193,230.68 and 48,836.09
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Solution
The fourth proportional to 128,819.63, 193,230.68 and 48,836.09 is: 73,254.60
Step by Step Solution
- Step 1: Write the proportion equation
128,819.63 : 193,230.68 = 48,836.09 : x - Step 2: Convert to fraction form
128,819.63/193,230.68 = 48,836.09/x - Step 3: Cross multiply
128,819.63x = 193,230.68 × 48,836.09 - Step 4: Simplify right side
128,819.63x = 9,436,630,879.24 - Step 5: Solve for x
x = 9,436,630,879.24/128,819.63 - Step 6: Final answer
x = 73,254.60
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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.