Finding the Fourth Proportional to 129,423.26, 194,122.06 and 40,674.40
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Solution
The fourth proportional to 129,423.26, 194,122.06 and 40,674.40 is: 61,007.57
Step by Step Solution
- Step 1: Write the proportion equation
129,423.26 : 194,122.06 = 40,674.40 : x - Step 2: Convert to fraction form
129,423.26/194,122.06 = 40,674.40/x - Step 3: Cross multiply
129,423.26x = 194,122.06 × 40,674.40 - Step 4: Simplify right side
129,423.26x = 7,895,798,317.26 - Step 5: Solve for x
x = 7,895,798,317.26/129,423.26 - Step 6: Final answer
x = 61,007.57
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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.