Finding the Fourth Proportional to 126,840.20, 190,260.30 and 84,849.80
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Solution
The fourth proportional to 126,840.20, 190,260.30 and 84,849.80 is: 127,274.70
Step by Step Solution
- Step 1: Write the proportion equation
126,840.20 : 190,260.30 = 84,849.80 : x - Step 2: Convert to fraction form
126,840.20/190,260.30 = 84,849.80/x - Step 3: Cross multiply
126,840.20x = 190,260.30 × 84,849.80 - Step 4: Simplify right side
126,840.20x = 16,143,548,402.94 - Step 5: Solve for x
x = 16,143,548,402.94/126,840.20 - Step 6: Final answer
x = 127,274.70
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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.