Finding the Fourth Proportional to 138,935.93, 208,403.28 and 33,755.20
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Solution
The fourth proportional to 138,935.93, 208,403.28 and 33,755.20 is: 50,632.65
Step by Step Solution
- Step 1: Write the proportion equation
138,935.93 : 208,403.28 = 33,755.20 : x - Step 2: Convert to fraction form
138,935.93/208,403.28 = 33,755.20/x - Step 3: Cross multiply
138,935.93x = 208,403.28 × 33,755.20 - Step 4: Simplify right side
138,935.93x = 7,034,693,876.05 - Step 5: Solve for x
x = 7,034,693,876.05/138,935.93 - Step 6: Final answer
x = 50,632.65
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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.