Finding the Fourth Proportional to 138,415.30, 207,650.69 and 49,675.75
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Solution
The fourth proportional to 138,415.30, 207,650.69 and 49,675.75 is: 74,523.58
Step by Step Solution
- Step 1: Write the proportion equation
138,415.30 : 207,650.69 = 49,675.75 : x - Step 2: Convert to fraction form
138,415.30/207,650.69 = 49,675.75/x - Step 3: Cross multiply
138,415.30x = 207,650.69 × 49,675.75 - Step 4: Simplify right side
138,415.30x = 10,315,203,182.55 - Step 5: Solve for x
x = 10,315,203,182.55/138,415.30 - Step 6: Final answer
x = 74,523.58
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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.