Finding the Fourth Proportional to 122,418.20, 183,627.30 and 72,651.80
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Solution
The fourth proportional to 122,418.20, 183,627.30 and 72,651.80 is: 108,977.70
Step by Step Solution
- Step 1: Write the proportion equation
122,418.20 : 183,627.30 = 72,651.80 : x - Step 2: Convert to fraction form
122,418.20/183,627.30 = 72,651.80/x - Step 3: Cross multiply
122,418.20x = 183,627.30 × 72,651.80 - Step 4: Simplify right side
122,418.20x = 13,340,853,874.14 - Step 5: Solve for x
x = 13,340,853,874.14/122,418.20 - Step 6: Final answer
x = 108,977.70
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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.