Finding the Fourth Proportional to 128,052.60, 192,224.70 and 75,491.70
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Solution
The fourth proportional to 128,052.60, 192,224.70 and 75,491.70 is: 113,323.50
Step by Step Solution
- Step 1: Write the proportion equation
128,052.60 : 192,224.70 = 75,491.70 : x - Step 2: Convert to fraction form
128,052.60/192,224.70 = 75,491.70/x - Step 3: Cross multiply
128,052.60x = 192,224.70 × 75,491.70 - Step 4: Simplify right side
128,052.60x = 14,511,369,384.99 - Step 5: Solve for x
x = 14,511,369,384.99/128,052.60 - Step 6: Final answer
x = 113,323.50
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1.5x scale
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.