Finding the Fourth Proportional to 121,751.62, 182,668.46 and 76,720.68
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Solution
The fourth proportional to 121,751.62, 182,668.46 and 76,720.68 is: 115,106.87
Step by Step Solution
- Step 1: Write the proportion equation
121,751.62 : 182,668.46 = 76,720.68 : x - Step 2: Convert to fraction form
121,751.62/182,668.46 = 76,720.68/x - Step 3: Cross multiply
121,751.62x = 182,668.46 × 76,720.68 - Step 4: Simplify right side
121,751.62x = 14,014,448,082.15 - Step 5: Solve for x
x = 14,014,448,082.15/121,751.62 - Step 6: Final answer
x = 115,106.87
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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.