Finding the Fourth Proportional to 121,107.13, 167,125.63 and 67,391.68
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Solution
The fourth proportional to 121,107.13, 167,125.63 and 67,391.68 is: 92,999.29
Step by Step Solution
- Step 1: Write the proportion equation
121,107.13 : 167,125.63 = 67,391.68 : x - Step 2: Convert to fraction form
121,107.13/167,125.63 = 67,391.68/x - Step 3: Cross multiply
121,107.13x = 167,125.63 × 67,391.68 - Step 4: Simplify right side
121,107.13x = 11,262,876,830.19 - Step 5: Solve for x
x = 11,262,876,830.19/121,107.13 - Step 6: Final answer
x = 92,999.29
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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.