Finding the Fourth Proportional to 122,206.68, 168,747.84 and 91,939.38
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Solution
The fourth proportional to 122,206.68, 168,747.84 and 91,939.38 is: 126,953.55
Step by Step Solution
- Step 1: Write the proportion equation
122,206.68 : 168,747.84 = 91,939.38 : x - Step 2: Convert to fraction form
122,206.68/168,747.84 = 91,939.38/x - Step 3: Cross multiply
122,206.68x = 168,747.84 × 91,939.38 - Step 4: Simplify right side
122,206.68x = 15,514,571,785.94 - Step 5: Solve for x
x = 15,514,571,785.94/122,206.68 - Step 6: Final answer
x = 126,953.55
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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.