Finding the Fourth Proportional to 198,855.63, 274,420.81 and 109,431.63
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Solution
The fourth proportional to 198,855.63, 274,420.81 and 109,431.63 is: 151,015.67
Step by Step Solution
- Step 1: Write the proportion equation
198,855.63 : 274,420.81 = 109,431.63 : x - Step 2: Convert to fraction form
198,855.63/274,420.81 = 109,431.63/x - Step 3: Cross multiply
198,855.63x = 274,420.81 × 109,431.63 - Step 4: Simplify right side
198,855.63x = 30,030,314,898.54 - Step 5: Solve for x
x = 30,030,314,898.54/198,855.63 - Step 6: Final answer
x = 151,015.67
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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.