Finding the Fourth Proportional to 122,564.24, 169,134.84 and 68,855.12
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Solution
The fourth proportional to 122,564.24, 169,134.84 and 68,855.12 is: 95,017.92
Step by Step Solution
- Step 1: Write the proportion equation
122,564.24 : 169,134.84 = 68,855.12 : x - Step 2: Convert to fraction form
122,564.24/169,134.84 = 68,855.12/x - Step 3: Cross multiply
122,564.24x = 169,134.84 × 68,855.12 - Step 4: Simplify right side
122,564.24x = 11,645,799,704.38 - Step 5: Solve for x
x = 11,645,799,704.38/122,564.24 - Step 6: Final answer
x = 95,017.92
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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.