Finding the Fourth Proportional to 117,142.11, 161,535.29 and 100,202.42
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Solution
The fourth proportional to 117,142.11, 161,535.29 and 100,202.42 is: 138,175.99
Step by Step Solution
- Step 1: Write the proportion equation
117,142.11 : 161,535.29 = 100,202.42 : x - Step 2: Convert to fraction form
117,142.11/161,535.29 = 100,202.42/x - Step 3: Cross multiply
117,142.11x = 161,535.29 × 100,202.42 - Step 4: Simplify right side
117,142.11x = 16,186,226,876.23 - Step 5: Solve for x
x = 16,186,226,876.23/117,142.11 - Step 6: Final answer
x = 138,175.99
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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.