Finding the Fourth Proportional to 138,338.08, 207,571.92 and 68,179.12
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Solution
The fourth proportional to 138,338.08, 207,571.92 and 68,179.12 is: 102,300.62
Step by Step Solution
- Step 1: Write the proportion equation
138,338.08 : 207,571.92 = 68,179.12 : x - Step 2: Convert to fraction form
138,338.08/207,571.92 = 68,179.12/x - Step 3: Cross multiply
138,338.08x = 207,571.92 × 68,179.12 - Step 4: Simplify right side
138,338.08x = 14,152,070,842.31 - Step 5: Solve for x
x = 14,152,070,842.31/138,338.08 - Step 6: Final answer
x = 102,300.62
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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.