Finding the Fourth Proportional to 128,668.14, 192,936.39 and 53,767.84
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Solution
The fourth proportional to 128,668.14, 192,936.39 and 53,767.84 is: 80,624.26
Step by Step Solution
- Step 1: Write the proportion equation
128,668.14 : 192,936.39 = 53,767.84 : x - Step 2: Convert to fraction form
128,668.14/192,936.39 = 53,767.84/x - Step 3: Cross multiply
128,668.14x = 192,936.39 × 53,767.84 - Step 4: Simplify right side
128,668.14x = 10,373,772,947.70 - Step 5: Solve for x
x = 10,373,772,947.70/128,668.14 - Step 6: Final answer
x = 80,624.26
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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.