Finding the Fourth Proportional to 129,622.26, 178,878.70 and 70,006.26
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Solution
The fourth proportional to 129,622.26, 178,878.70 and 70,006.26 is: 96,608.63
Step by Step Solution
- Step 1: Write the proportion equation
129,622.26 : 178,878.70 = 70,006.26 : x - Step 2: Convert to fraction form
129,622.26/178,878.70 = 70,006.26/x - Step 3: Cross multiply
129,622.26x = 178,878.70 × 70,006.26 - Step 4: Simplify right side
129,622.26x = 12,522,628,780.66 - Step 5: Solve for x
x = 12,522,628,780.66/129,622.26 - Step 6: Final answer
x = 96,608.63
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.