Finding the Fourth Proportional to 129,232.40, 193,790.26 and 46,128.56
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Solution
The fourth proportional to 129,232.40, 193,790.26 and 46,128.56 is: 69,172.02
Step by Step Solution
- Step 1: Write the proportion equation
129,232.40 : 193,790.26 = 46,128.56 : x - Step 2: Convert to fraction form
129,232.40/193,790.26 = 46,128.56/x - Step 3: Cross multiply
129,232.40x = 193,790.26 × 46,128.56 - Step 4: Simplify right side
129,232.40x = 8,939,265,635.83 - Step 5: Solve for x
x = 8,939,265,635.83/129,232.40 - Step 6: Final answer
x = 69,172.02
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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.