Finding the Fourth Proportional to 128,491.36, 192,751.44 and 34,997.92
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Solution
The fourth proportional to 128,491.36, 192,751.44 and 34,997.92 is: 52,500.80
Step by Step Solution
- Step 1: Write the proportion equation
128,491.36 : 192,751.44 = 34,997.92 : x - Step 2: Convert to fraction form
128,491.36/192,751.44 = 34,997.92/x - Step 3: Cross multiply
128,491.36x = 192,751.44 × 34,997.92 - Step 4: Simplify right side
128,491.36x = 6,745,899,477.00 - Step 5: Solve for x
x = 6,745,899,477.00/128,491.36 - Step 6: Final answer
x = 52,500.80
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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.