Finding the Fourth Proportional to 138,568.78, 208,186.08 and 88,745.68
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Solution
The fourth proportional to 138,568.78, 208,186.08 and 88,745.68 is: 133,331.73
Step by Step Solution
- Step 1: Write the proportion equation
138,568.78 : 208,186.08 = 88,745.68 : x - Step 2: Convert to fraction form
138,568.78/208,186.08 = 88,745.68/x - Step 3: Cross multiply
138,568.78x = 208,186.08 × 88,745.68 - Step 4: Simplify right side
138,568.78x = 18,475,615,236.13 - Step 5: Solve for x
x = 18,475,615,236.13/138,568.78 - Step 6: Final answer
x = 133,331.73
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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.