Finding the Fourth Proportional to 229,704.75, 316,992.56 and 129,102.75
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Solution
The fourth proportional to 229,704.75, 316,992.56 and 129,102.75 is: 178,161.80
Step by Step Solution
- Step 1: Write the proportion equation
229,704.75 : 316,992.56 = 129,102.75 : x - Step 2: Convert to fraction form
229,704.75/316,992.56 = 129,102.75/x - Step 3: Cross multiply
229,704.75x = 316,992.56 × 129,102.75 - Step 4: Simplify right side
229,704.75x = 40,924,610,580.03 - Step 5: Solve for x
x = 40,924,610,580.03/229,704.75 - Step 6: Final answer
x = 178,161.80
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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.