Finding the Fourth Proportional to 129,905.64, 194,865.48 and 36,418.68
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Solution
The fourth proportional to 129,905.64, 194,865.48 and 36,418.68 is: 54,629.99
Step by Step Solution
- Step 1: Write the proportion equation
129,905.64 : 194,865.48 = 36,418.68 : x - Step 2: Convert to fraction form
129,905.64/194,865.48 = 36,418.68/x - Step 3: Cross multiply
129,905.64x = 194,865.48 × 36,418.68 - Step 4: Simplify right side
129,905.64x = 7,096,743,559.17 - Step 5: Solve for x
x = 7,096,743,559.17/129,905.64 - Step 6: Final answer
x = 54,629.99
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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.