Finding the Fourth Proportional to 117,141.24, 161,534.09 and 100,201.56
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Solution
The fourth proportional to 117,141.24, 161,534.09 and 100,201.56 is: 138,174.80
Step by Step Solution
- Step 1: Write the proportion equation
117,141.24 : 161,534.09 = 100,201.56 : x - Step 2: Convert to fraction form
117,141.24/161,534.09 = 100,201.56/x - Step 3: Cross multiply
117,141.24x = 161,534.09 × 100,201.56 - Step 4: Simplify right side
117,141.24x = 16,185,967,310.17 - Step 5: Solve for x
x = 16,185,967,310.17/117,141.24 - Step 6: Final answer
x = 138,174.80
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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.