Finding the Fourth Proportional to 121,640.80, 182,023.80 and 82,274.80
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Solution
The fourth proportional to 121,640.80, 182,023.80 and 82,274.80 is: 123,116.35
Step by Step Solution
- Step 1: Write the proportion equation
121,640.80 : 182,023.80 = 82,274.80 : x - Step 2: Convert to fraction form
121,640.80/182,023.80 = 82,274.80/x - Step 3: Cross multiply
121,640.80x = 182,023.80 × 82,274.80 - Step 4: Simplify right side
121,640.80x = 14,975,971,740.24 - Step 5: Solve for x
x = 14,975,971,740.24/121,640.80 - Step 6: Final answer
x = 123,116.35
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1.5x scale
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.