Finding the Fourth Proportional to 129,576.63, 194,364.95 and 74,133.75
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Solution
The fourth proportional to 129,576.63, 194,364.95 and 74,133.75 is: 111,200.63
Step by Step Solution
- Step 1: Write the proportion equation
129,576.63 : 194,364.95 = 74,133.75 : x - Step 2: Convert to fraction form
129,576.63/194,364.95 = 74,133.75/x - Step 3: Cross multiply
129,576.63x = 194,364.95 × 74,133.75 - Step 4: Simplify right side
129,576.63x = 14,409,002,612.06 - Step 5: Solve for x
x = 14,409,002,612.06/129,576.63 - Step 6: Final answer
x = 111,200.63
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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.