Finding the Fourth Proportional to 154,939.21, 232,485.36 and 91,756.78
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Solution
The fourth proportional to 154,939.21, 232,485.36 and 91,756.78 is: 137,680.50
Step by Step Solution
- Step 1: Write the proportion equation
154,939.21 : 232,485.36 = 91,756.78 : x - Step 2: Convert to fraction form
154,939.21/232,485.36 = 91,756.78/x - Step 3: Cross multiply
154,939.21x = 232,485.36 × 91,756.78 - Step 4: Simplify right side
154,939.21x = 21,332,106,868.31 - Step 5: Solve for x
x = 21,332,106,868.31/154,939.21 - Step 6: Final answer
x = 137,680.50
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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.