Finding the Fourth Proportional to 127,988.60, 192,128.70 and 75,427.70
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Solution
The fourth proportional to 127,988.60, 192,128.70 and 75,427.70 is: 113,227.47
Step by Step Solution
- Step 1: Write the proportion equation
127,988.60 : 192,128.70 = 75,427.70 : x - Step 2: Convert to fraction form
127,988.60/192,128.70 = 75,427.70/x - Step 3: Cross multiply
127,988.60x = 192,128.70 × 75,427.70 - Step 4: Simplify right side
127,988.60x = 14,491,825,944.99 - Step 5: Solve for x
x = 14,491,825,944.99/127,988.60 - Step 6: Final answer
x = 113,227.47
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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.