Finding the Fourth Proportional to 129,508.09, 194,288.41 and 40,740.95
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Solution
The fourth proportional to 129,508.09, 194,288.41 and 40,740.95 is: 61,119.69
Step by Step Solution
- Step 1: Write the proportion equation
129,508.09 : 194,288.41 = 40,740.95 : x - Step 2: Convert to fraction form
129,508.09/194,288.41 = 40,740.95/x - Step 3: Cross multiply
129,508.09x = 194,288.41 × 40,740.95 - Step 4: Simplify right side
129,508.09x = 7,915,493,707.96 - Step 5: Solve for x
x = 7,915,493,707.96/129,508.09 - Step 6: Final answer
x = 61,119.69
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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.