Finding the Fourth Proportional to 198,731.08, 274,424.34 and 135,220.60
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Solution
The fourth proportional to 198,731.08, 274,424.34 and 135,220.60 is: 186,723.81
Step by Step Solution
- Step 1: Write the proportion equation
198,731.08 : 274,424.34 = 135,220.60 : x - Step 2: Convert to fraction form
198,731.08/274,424.34 = 135,220.60/x - Step 3: Cross multiply
198,731.08x = 274,424.34 × 135,220.60 - Step 4: Simplify right side
198,731.08x = 37,107,823,909.40 - Step 5: Solve for x
x = 37,107,823,909.40/198,731.08 - Step 6: Final answer
x = 186,723.81
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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.