Finding the Fourth Proportional to 117,286.70, 161,851.70 and 69,511.68
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Solution
The fourth proportional to 117,286.70, 161,851.70 and 69,511.68 is: 95,923.79
Step by Step Solution
- Step 1: Write the proportion equation
117,286.70 : 161,851.70 = 69,511.68 : x - Step 2: Convert to fraction form
117,286.70/161,851.70 = 69,511.68/x - Step 3: Cross multiply
117,286.70x = 161,851.70 × 69,511.68 - Step 4: Simplify right side
117,286.70x = 11,250,583,751.64 - Step 5: Solve for x
x = 11,250,583,751.64/117,286.70 - Step 6: Final answer
x = 95,923.79
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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.