Finding the Fourth Proportional to 129,515.34, 194,283.95 and 36,021.09
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Solution
The fourth proportional to 129,515.34, 194,283.95 and 36,021.09 is: 54,034.68
Step by Step Solution
- Step 1: Write the proportion equation
129,515.34 : 194,283.95 = 36,021.09 : x - Step 2: Convert to fraction form
129,515.34/194,283.95 = 36,021.09/x - Step 3: Cross multiply
129,515.34x = 194,283.95 × 36,021.09 - Step 4: Simplify right side
129,515.34x = 6,998,320,399.58 - Step 5: Solve for x
x = 6,998,320,399.58/129,515.34 - Step 6: Final answer
x = 54,034.68
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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.