Finding the Fourth Proportional to 117,114.18, 161,581.77 and 71,775.54
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Solution
The fourth proportional to 117,114.18, 161,581.77 and 71,775.54 is: 99,028.31
Step by Step Solution
- Step 1: Write the proportion equation
117,114.18 : 161,581.77 = 71,775.54 : x - Step 2: Convert to fraction form
117,114.18/161,581.77 = 71,775.54/x - Step 3: Cross multiply
117,114.18x = 161,581.77 × 71,775.54 - Step 4: Simplify right side
117,114.18x = 11,597,618,795.91 - Step 5: Solve for x
x = 11,597,618,795.91/117,114.18 - Step 6: Final answer
x = 99,028.31
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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.