Finding the Fourth Proportional to 117,141.62, 161,534.61 and 100,201.94
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Solution
The fourth proportional to 117,141.62, 161,534.61 and 100,201.94 is: 138,175.33
Step by Step Solution
- Step 1: Write the proportion equation
117,141.62 : 161,534.61 = 100,201.94 : x - Step 2: Convert to fraction form
117,141.62/161,534.61 = 100,201.94/x - Step 3: Cross multiply
117,141.62x = 161,534.61 × 100,201.94 - Step 4: Simplify right side
117,141.62x = 16,186,081,097.23 - Step 5: Solve for x
x = 16,186,081,097.23/117,141.62 - Step 6: Final answer
x = 138,175.33
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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.