Finding the Fourth Proportional to 121,136.28, 181,704.68 and 36,896.80
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Solution
The fourth proportional to 121,136.28, 181,704.68 and 36,896.80 is: 55,345.28
Step by Step Solution
- Step 1: Write the proportion equation
121,136.28 : 181,704.68 = 36,896.80 : x - Step 2: Convert to fraction form
121,136.28/181,704.68 = 36,896.80/x - Step 3: Cross multiply
121,136.28x = 181,704.68 × 36,896.80 - Step 4: Simplify right side
121,136.28x = 6,704,321,237.02 - Step 5: Solve for x
x = 6,704,321,237.02/121,136.28 - Step 6: Final answer
x = 55,345.28
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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.