Finding the Fourth Proportional to 154,198.71, 212,729.76 and 120,148.08
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Solution
The fourth proportional to 154,198.71, 212,729.76 and 120,148.08 is: 165,754.12
Step by Step Solution
- Step 1: Write the proportion equation
154,198.71 : 212,729.76 = 120,148.08 : x - Step 2: Convert to fraction form
154,198.71/212,729.76 = 120,148.08/x - Step 3: Cross multiply
154,198.71x = 212,729.76 × 120,148.08 - Step 4: Simplify right side
154,198.71x = 25,559,072,222.86 - Step 5: Solve for x
x = 25,559,072,222.86/154,198.71 - Step 6: Final answer
x = 165,754.12
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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.