Finding the Fourth Proportional to 143,178.14, 214,765.84 and 87,033.75
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Solution
The fourth proportional to 143,178.14, 214,765.84 and 87,033.75 is: 130,549.79
Step by Step Solution
- Step 1: Write the proportion equation
143,178.14 : 214,765.84 = 87,033.75 : x - Step 2: Convert to fraction form
143,178.14/214,765.84 = 87,033.75/x - Step 3: Cross multiply
143,178.14x = 214,765.84 × 87,033.75 - Step 4: Simplify right side
143,178.14x = 18,691,875,991.93 - Step 5: Solve for x
x = 18,691,875,991.93/143,178.14 - Step 6: Final answer
x = 130,549.79
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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.