Finding the Fourth Proportional to 135,193.92, 186,622.56 and 87,449.28
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Solution
The fourth proportional to 135,193.92, 186,622.56 and 87,449.28 is: 120,715.55
Step by Step Solution
- Step 1: Write the proportion equation
135,193.92 : 186,622.56 = 87,449.28 : x - Step 2: Convert to fraction form
135,193.92/186,622.56 = 87,449.28/x - Step 3: Cross multiply
135,193.92x = 186,622.56 × 87,449.28 - Step 4: Simplify right side
135,193.92x = 16,320,008,503.76 - Step 5: Solve for x
x = 16,320,008,503.76/135,193.92 - Step 6: Final answer
x = 120,715.55
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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.