Finding the Fourth Proportional to 154,183.71, 212,809.05 and 100,374.99
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Solution
The fourth proportional to 154,183.71, 212,809.05 and 100,374.99 is: 138,540.62
Step by Step Solution
- Step 1: Write the proportion equation
154,183.71 : 212,809.05 = 100,374.99 : x - Step 2: Convert to fraction form
154,183.71/212,809.05 = 100,374.99/x - Step 3: Cross multiply
154,183.71x = 212,809.05 × 100,374.99 - Step 4: Simplify right side
154,183.71x = 21,360,706,265.66 - Step 5: Solve for x
x = 21,360,706,265.66/154,183.71 - Step 6: Final answer
x = 138,540.62
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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.