Finding the Fourth Proportional to 122,381.36, 168,879.48 and 68,661.44
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Solution
The fourth proportional to 122,381.36, 168,879.48 and 68,661.44 is: 94,748.97
Step by Step Solution
- Step 1: Write the proportion equation
122,381.36 : 168,879.48 = 68,661.44 : x - Step 2: Convert to fraction form
122,381.36/168,879.48 = 68,661.44/x - Step 3: Cross multiply
122,381.36x = 168,879.48 × 68,661.44 - Step 4: Simplify right side
122,381.36x = 11,595,508,283.25 - Step 5: Solve for x
x = 11,595,508,283.25/122,381.36 - Step 6: Final answer
x = 94,748.97
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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.