Finding the Fourth Proportional to 125,076.36, 172,605.42 and 68,491.20
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Solution
The fourth proportional to 125,076.36, 172,605.42 and 68,491.20 is: 94,517.88
Step by Step Solution
- Step 1: Write the proportion equation
125,076.36 : 172,605.42 = 68,491.20 : x - Step 2: Convert to fraction form
125,076.36/172,605.42 = 68,491.20/x - Step 3: Cross multiply
125,076.36x = 172,605.42 × 68,491.20 - Step 4: Simplify right side
125,076.36x = 11,821,952,342.30 - Step 5: Solve for x
x = 11,821,952,342.30/125,076.36 - Step 6: Final answer
x = 94,517.88
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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.