Finding the Fourth Proportional to 129,328.19, 194,000.49 and 40,585.20
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Solution
The fourth proportional to 129,328.19, 194,000.49 and 40,585.20 is: 60,880.37
Step by Step Solution
- Step 1: Write the proportion equation
129,328.19 : 194,000.49 = 40,585.20 : x - Step 2: Convert to fraction form
129,328.19/194,000.49 = 40,585.20/x - Step 3: Cross multiply
129,328.19x = 194,000.49 × 40,585.20 - Step 4: Simplify right side
129,328.19x = 7,873,548,686.75 - Step 5: Solve for x
x = 7,873,548,686.75/129,328.19 - Step 6: Final answer
x = 60,880.37
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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.