Finding the Fourth Proportional to 117,236.13, 161,783.73 and 66,247.75
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Solution
The fourth proportional to 117,236.13, 161,783.73 and 66,247.75 is: 91,420.69
Step by Step Solution
- Step 1: Write the proportion equation
117,236.13 : 161,783.73 = 66,247.75 : x - Step 2: Convert to fraction form
117,236.13/161,783.73 = 66,247.75/x - Step 3: Cross multiply
117,236.13x = 161,783.73 × 66,247.75 - Step 4: Simplify right side
117,236.13x = 10,717,808,099.11 - Step 5: Solve for x
x = 10,717,808,099.11/117,236.13 - Step 6: Final answer
x = 91,420.69
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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.