Finding the Fourth Proportional to 122,291.44, 168,786.39 and 79,324.18
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Solution
The fourth proportional to 122,291.44, 168,786.39 and 79,324.18 is: 109,483.07
Step by Step Solution
- Step 1: Write the proportion equation
122,291.44 : 168,786.39 = 79,324.18 : x - Step 2: Convert to fraction form
122,291.44/168,786.39 = 79,324.18/x - Step 3: Cross multiply
122,291.44x = 168,786.39 × 79,324.18 - Step 4: Simplify right side
122,291.44x = 13,388,841,981.91 - Step 5: Solve for x
x = 13,388,841,981.91/122,291.44 - Step 6: Final answer
x = 109,483.07
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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.