Finding the Fourth Proportional to 143,576.25, 198,135.23 and 79,912.68
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Solution
The fourth proportional to 143,576.25, 198,135.23 and 79,912.68 is: 110,279.50
Step by Step Solution
- Step 1: Write the proportion equation
143,576.25 : 198,135.23 = 79,912.68 : x - Step 2: Convert to fraction form
143,576.25/198,135.23 = 79,912.68/x - Step 3: Cross multiply
143,576.25x = 198,135.23 × 79,912.68 - Step 4: Simplify right side
143,576.25x = 15,833,516,832.15 - Step 5: Solve for x
x = 15,833,516,832.15/143,576.25 - Step 6: Final answer
x = 110,279.50
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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.