Finding the Fourth Proportional to 128,861.50, 193,214.58 and 57,771.28
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Solution
The fourth proportional to 128,861.50, 193,214.58 and 57,771.28 is: 86,622.09
Step by Step Solution
- Step 1: Write the proportion equation
128,861.50 : 193,214.58 = 57,771.28 : x - Step 2: Convert to fraction form
128,861.50/193,214.58 = 57,771.28/x - Step 3: Cross multiply
128,861.50x = 193,214.58 × 57,771.28 - Step 4: Simplify right side
128,861.50x = 11,162,252,635.19 - Step 5: Solve for x
x = 11,162,252,635.19/128,861.50 - Step 6: Final answer
x = 86,622.09
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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.