Finding the Fourth Proportional to 129,792.80, 194,695.60 and 67,584.80
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Solution
The fourth proportional to 129,792.80, 194,695.60 and 67,584.80 is: 101,380.53
Step by Step Solution
- Step 1: Write the proportion equation
129,792.80 : 194,695.60 = 67,584.80 : x - Step 2: Convert to fraction form
129,792.80/194,695.60 = 67,584.80/x - Step 3: Cross multiply
129,792.80x = 194,695.60 × 67,584.80 - Step 4: Simplify right side
129,792.80x = 13,158,463,186.88 - Step 5: Solve for x
x = 13,158,463,186.88/129,792.80 - Step 6: Final answer
x = 101,380.53
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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.