Finding the Fourth Proportional to 121,425.38, 167,578.97 and 73,674.98
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Solution
The fourth proportional to 121,425.38, 167,578.97 and 73,674.98 is: 101,678.72
Step by Step Solution
- Step 1: Write the proportion equation
121,425.38 : 167,578.97 = 73,674.98 : x - Step 2: Convert to fraction form
121,425.38/167,578.97 = 73,674.98/x - Step 3: Cross multiply
121,425.38x = 167,578.97 × 73,674.98 - Step 4: Simplify right side
121,425.38x = 12,346,377,263.17 - Step 5: Solve for x
x = 12,346,377,263.17/121,425.38 - Step 6: Final answer
x = 101,678.72
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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.