Finding the Fourth Proportional to 117,213.36, 161,763.12 and 66,231.96
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Solution
The fourth proportional to 117,213.36, 161,763.12 and 66,231.96 is: 91,405.01
Step by Step Solution
- Step 1: Write the proportion equation
117,213.36 : 161,763.12 = 66,231.96 : x - Step 2: Convert to fraction form
117,213.36/161,763.12 = 66,231.96/x - Step 3: Cross multiply
117,213.36x = 161,763.12 × 66,231.96 - Step 4: Simplify right side
117,213.36x = 10,713,888,493.32 - Step 5: Solve for x
x = 10,713,888,493.32/117,213.36 - Step 6: Final answer
x = 91,405.01
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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.