Finding the Fourth Proportional to 139,322.44, 192,267.26 and 78,891.49
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Solution
The fourth proportional to 139,322.44, 192,267.26 and 78,891.49 is: 108,871.55
Step by Step Solution
- Step 1: Write the proportion equation
139,322.44 : 192,267.26 = 78,891.49 : x - Step 2: Convert to fraction form
139,322.44/192,267.26 = 78,891.49/x - Step 3: Cross multiply
139,322.44x = 192,267.26 × 78,891.49 - Step 4: Simplify right side
139,322.44x = 15,168,250,619.62 - Step 5: Solve for x
x = 15,168,250,619.62/139,322.44 - Step 6: Final answer
x = 108,871.55
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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.