Finding the Fourth Proportional to 122,415.68, 168,936.66 and 68,704.78
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Solution
The fourth proportional to 122,415.68, 168,936.66 and 68,704.78 is: 94,814.29
Step by Step Solution
- Step 1: Write the proportion equation
122,415.68 : 168,936.66 = 68,704.78 : x - Step 2: Convert to fraction form
122,415.68/168,936.66 = 68,704.78/x - Step 3: Cross multiply
122,415.68x = 168,936.66 × 68,704.78 - Step 4: Simplify right side
122,415.68x = 11,606,756,059.23 - Step 5: Solve for x
x = 11,606,756,059.23/122,415.68 - Step 6: Final answer
x = 94,814.29
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.