Finding the Fourth Proportional to 122,106.21, 168,504.48 and 68,391.06
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Solution
The fourth proportional to 122,106.21, 168,504.48 and 68,391.06 is: 94,378.49
Step by Step Solution
- Step 1: Write the proportion equation
122,106.21 : 168,504.48 = 68,391.06 : x - Step 2: Convert to fraction form
122,106.21/168,504.48 = 68,391.06/x - Step 3: Cross multiply
122,106.21x = 168,504.48 × 68,391.06 - Step 4: Simplify right side
122,106.21x = 11,524,200,001.95 - Step 5: Solve for x
x = 11,524,200,001.95/122,106.21 - Step 6: Final answer
x = 94,378.49
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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.