Finding the Fourth Proportional to 107,618.40, 161,427.60 and 68,252.40
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Solution
The fourth proportional to 107,618.40, 161,427.60 and 68,252.40 is: 102,378.60
Step by Step Solution
- Step 1: Write the proportion equation
107,618.40 : 161,427.60 = 68,252.40 : x - Step 2: Convert to fraction form
107,618.40/161,427.60 = 68,252.40/x - Step 3: Cross multiply
107,618.40x = 161,427.60 × 68,252.40 - Step 4: Simplify right side
107,618.40x = 11,017,821,126.24 - Step 5: Solve for x
x = 11,017,821,126.24/107,618.40 - Step 6: Final answer
x = 102,378.60
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.