Finding the Fourth Proportional to 197,821.20, 272,844.36 and 137,391.96
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Solution
The fourth proportional to 197,821.20, 272,844.36 and 137,391.96 is: 189,497.49
Step by Step Solution
- Step 1: Write the proportion equation
197,821.20 : 272,844.36 = 137,391.96 : x - Step 2: Convert to fraction form
197,821.20/272,844.36 = 137,391.96/x - Step 3: Cross multiply
197,821.20x = 272,844.36 × 137,391.96 - Step 4: Simplify right side
197,821.20x = 37,486,621,395.35 - Step 5: Solve for x
x = 37,486,621,395.35/197,821.20 - Step 6: Final answer
x = 189,497.49
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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.