Finding the Fourth Proportional to 143,379.60, 214,810.20 and 126,790.80
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Solution
The fourth proportional to 143,379.60, 214,810.20 and 126,790.80 is: 189,956.99
Step by Step Solution
- Step 1: Write the proportion equation
143,379.60 : 214,810.20 = 126,790.80 : x - Step 2: Convert to fraction form
143,379.60/214,810.20 = 126,790.80/x - Step 3: Cross multiply
143,379.60x = 214,810.20 × 126,790.80 - Step 4: Simplify right side
143,379.60x = 27,235,957,106.16 - Step 5: Solve for x
x = 27,235,957,106.16/143,379.60 - Step 6: Final answer
x = 189,956.99
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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.