Finding the Fourth Proportional to 138,825.46, 191,578.26 and 75,163.06
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Solution
The fourth proportional to 138,825.46, 191,578.26 and 75,163.06 is: 103,724.55
Step by Step Solution
- Step 1: Write the proportion equation
138,825.46 : 191,578.26 = 75,163.06 : x - Step 2: Convert to fraction form
138,825.46/191,578.26 = 75,163.06/x - Step 3: Cross multiply
138,825.46x = 191,578.26 × 75,163.06 - Step 4: Simplify right side
138,825.46x = 14,399,608,251.08 - Step 5: Solve for x
x = 14,399,608,251.08/138,825.46 - Step 6: Final answer
x = 103,724.55
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.