Finding the Fourth Proportional to 189,661.12, 285,067.50 and 126,704.68
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Solution
The fourth proportional to 189,661.12, 285,067.50 and 126,704.68 is: 190,441.70
Step by Step Solution
- Step 1: Write the proportion equation
189,661.12 : 285,067.50 = 126,704.68 : x - Step 2: Convert to fraction form
189,661.12/285,067.50 = 126,704.68/x - Step 3: Cross multiply
189,661.12x = 285,067.50 × 126,704.68 - Step 4: Simplify right side
189,661.12x = 36,119,386,365.90 - Step 5: Solve for x
x = 36,119,386,365.90/189,661.12 - Step 6: Final answer
x = 190,441.70
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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.