Finding the Fourth Proportional to 197,781.11, 272,939.25 and 107,137.08
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Solution
The fourth proportional to 197,781.11, 272,939.25 and 107,137.08 is: 147,849.89
Step by Step Solution
- Step 1: Write the proportion equation
197,781.11 : 272,939.25 = 107,137.08 : x - Step 2: Convert to fraction form
197,781.11/272,939.25 = 107,137.08/x - Step 3: Cross multiply
197,781.11x = 272,939.25 × 107,137.08 - Step 4: Simplify right side
197,781.11x = 29,241,914,262.39 - Step 5: Solve for x
x = 29,241,914,262.39/197,781.11 - Step 6: Final answer
x = 147,849.89
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1.5x scale
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.