Finding the Fourth Proportional to 154,183.20, 212,808.36 and 100,374.48
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Solution
The fourth proportional to 154,183.20, 212,808.36 and 100,374.48 is: 138,539.92
Step by Step Solution
- Step 1: Write the proportion equation
154,183.20 : 212,808.36 = 100,374.48 : x - Step 2: Convert to fraction form
154,183.20/212,808.36 = 100,374.48/x - Step 3: Cross multiply
154,183.20x = 212,808.36 × 100,374.48 - Step 4: Simplify right side
154,183.20x = 21,360,528,474.65 - Step 5: Solve for x
x = 21,360,528,474.65/154,183.20 - Step 6: Final answer
x = 138,539.92
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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.