Finding the Fourth Proportional to 141,817.20, 212,466.60 and 115,378.80
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Solution
The fourth proportional to 141,817.20, 212,466.60 and 115,378.80 is: 172,857.32
Step by Step Solution
- Step 1: Write the proportion equation
141,817.20 : 212,466.60 = 115,378.80 : x - Step 2: Convert to fraction form
141,817.20/212,466.60 = 115,378.80/x - Step 3: Cross multiply
141,817.20x = 212,466.60 × 115,378.80 - Step 4: Simplify right side
141,817.20x = 24,514,141,348.08 - Step 5: Solve for x
x = 24,514,141,348.08/141,817.20 - Step 6: Final answer
x = 172,857.32
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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.