Finding the Fourth Proportional to 117,230.05, 161,767.83 and 66,247.21
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Solution
The fourth proportional to 117,230.05, 161,767.83 and 66,247.21 is: 91,415.70
Step by Step Solution
- Step 1: Write the proportion equation
117,230.05 : 161,767.83 = 66,247.21 : x - Step 2: Convert to fraction form
117,230.05/161,767.83 = 66,247.21/x - Step 3: Cross multiply
117,230.05x = 161,767.83 × 66,247.21 - Step 4: Simplify right side
117,230.05x = 10,716,667,405.25 - Step 5: Solve for x
x = 10,716,667,405.25/117,230.05 - Step 6: Final answer
x = 91,415.70
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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.