Finding the Fourth Proportional to 102,676.12, 141,691.62 and 57,354.84
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Solution
The fourth proportional to 102,676.12, 141,691.62 and 57,354.84 is: 79,148.88
Step by Step Solution
- Step 1: Write the proportion equation
102,676.12 : 141,691.62 = 57,354.84 : x - Step 2: Convert to fraction form
102,676.12/141,691.62 = 57,354.84/x - Step 3: Cross multiply
102,676.12x = 141,691.62 × 57,354.84 - Step 4: Simplify right side
102,676.12x = 8,126,700,194.44 - Step 5: Solve for x
x = 8,126,700,194.44/102,676.12 - Step 6: Final answer
x = 79,148.88
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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.