Finding the Fourth Proportional to 138,435.19, 207,481.47 and 98,390.37
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Solution
The fourth proportional to 138,435.19, 207,481.47 and 98,390.37 is: 147,463.80
Step by Step Solution
- Step 1: Write the proportion equation
138,435.19 : 207,481.47 = 98,390.37 : x - Step 2: Convert to fraction form
138,435.19/207,481.47 = 98,390.37/x - Step 3: Cross multiply
138,435.19x = 207,481.47 × 98,390.37 - Step 4: Simplify right side
138,435.19x = 20,414,178,601.44 - Step 5: Solve for x
x = 20,414,178,601.44/138,435.19 - Step 6: Final answer
x = 147,463.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.