Finding the Fourth Proportional to 122,171.24, 168,596.90 and 79,704.68
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Solution
The fourth proportional to 122,171.24, 168,596.90 and 79,704.68 is: 109,992.84
Step by Step Solution
- Step 1: Write the proportion equation
122,171.24 : 168,596.90 = 79,704.68 : x - Step 2: Convert to fraction form
122,171.24/168,596.90 = 79,704.68/x - Step 3: Cross multiply
122,171.24x = 168,596.90 × 79,704.68 - Step 4: Simplify right side
122,171.24x = 13,437,961,963.49 - Step 5: Solve for x
x = 13,437,961,963.49/122,171.24 - Step 6: Final answer
x = 109,992.84
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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.