Finding the Fourth Proportional to 122,415.77, 168,936.84 and 68,704.88
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Solution
The fourth proportional to 122,415.77, 168,936.84 and 68,704.88 is: 94,814.45
Step by Step Solution
- Step 1: Write the proportion equation
122,415.77 : 168,936.84 = 68,704.88 : x - Step 2: Convert to fraction form
122,415.77/168,936.84 = 68,704.88/x - Step 3: Cross multiply
122,415.77x = 168,936.84 × 68,704.88 - Step 4: Simplify right side
122,415.77x = 11,606,784,475.10 - Step 5: Solve for x
x = 11,606,784,475.10/122,415.77 - Step 6: Final answer
x = 94,814.45
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1.5x scale
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.