Finding the Fourth Proportional to 198,806.31, 274,349.79 and 108,163.08
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Solution
The fourth proportional to 198,806.31, 274,349.79 and 108,163.08 is: 149,263.46
Step by Step Solution
- Step 1: Write the proportion equation
198,806.31 : 274,349.79 = 108,163.08 : x - Step 2: Convert to fraction form
198,806.31/274,349.79 = 108,163.08/x - Step 3: Cross multiply
198,806.31x = 274,349.79 × 108,163.08 - Step 4: Simplify right side
198,806.31x = 29,674,518,283.75 - Step 5: Solve for x
x = 29,674,518,283.75/198,806.31 - Step 6: Final answer
x = 149,263.46
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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.