Finding the Fourth Proportional to 131,511.20, 197,354.17 and 48,405.20
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Solution
The fourth proportional to 131,511.20, 197,354.17 and 48,405.20 is: 72,639.95
Step by Step Solution
- Step 1: Write the proportion equation
131,511.20 : 197,354.17 = 48,405.20 : x - Step 2: Convert to fraction form
131,511.20/197,354.17 = 48,405.20/x - Step 3: Cross multiply
131,511.20x = 197,354.17 × 48,405.20 - Step 4: Simplify right side
131,511.20x = 9,552,967,143.42 - Step 5: Solve for x
x = 9,552,967,143.42/131,511.20 - Step 6: Final answer
x = 72,639.95
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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.