Finding the Fourth Proportional to 126,620.68, 174,771.06 and 78,845.80
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Solution
The fourth proportional to 126,620.68, 174,771.06 and 78,845.80 is: 108,828.70
Step by Step Solution
- Step 1: Write the proportion equation
126,620.68 : 174,771.06 = 78,845.80 : x - Step 2: Convert to fraction form
126,620.68/174,771.06 = 78,845.80/x - Step 3: Cross multiply
126,620.68x = 174,771.06 × 78,845.80 - Step 4: Simplify right side
126,620.68x = 13,779,964,042.55 - Step 5: Solve for x
x = 13,779,964,042.55/126,620.68 - Step 6: Final answer
x = 108,828.70
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.