Finding the Fourth Proportional to 129,634.90, 194,452.35 and 121,761.70
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Solution
The fourth proportional to 129,634.90, 194,452.35 and 121,761.70 is: 182,642.55
Step by Step Solution
- Step 1: Write the proportion equation
129,634.90 : 194,452.35 = 121,761.70 : x - Step 2: Convert to fraction form
129,634.90/194,452.35 = 121,761.70/x - Step 3: Cross multiply
129,634.90x = 194,452.35 × 121,761.70 - Step 4: Simplify right side
129,634.90x = 23,676,848,705.00 - Step 5: Solve for x
x = 23,676,848,705.00/129,634.90 - Step 6: Final answer
x = 182,642.55
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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.