Finding the Fourth Proportional to 138,380.36, 207,431.75 and 48,353.18
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Solution
The fourth proportional to 138,380.36, 207,431.75 and 48,353.18 is: 72,481.27
Step by Step Solution
- Step 1: Write the proportion equation
138,380.36 : 207,431.75 = 48,353.18 : x - Step 2: Convert to fraction form
138,380.36/207,431.75 = 48,353.18/x - Step 3: Cross multiply
138,380.36x = 207,431.75 × 48,353.18 - Step 4: Simplify right side
138,380.36x = 10,029,983,829.19 - Step 5: Solve for x
x = 10,029,983,829.19/138,380.36 - Step 6: Final answer
x = 72,481.27
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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.