Finding the Fourth Proportional to 139,786.20, 192,907.26 and 76,125.24
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Solution
The fourth proportional to 139,786.20, 192,907.26 and 76,125.24 is: 105,054.09
Step by Step Solution
- Step 1: Write the proportion equation
139,786.20 : 192,907.26 = 76,125.24 : x - Step 2: Convert to fraction form
139,786.20/192,907.26 = 76,125.24/x - Step 3: Cross multiply
139,786.20x = 192,907.26 × 76,125.24 - Step 4: Simplify right side
139,786.20x = 14,685,111,465.24 - Step 5: Solve for x
x = 14,685,111,465.24/139,786.20 - Step 6: Final answer
x = 105,054.09
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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.