Finding the Fourth Proportional to 140,378.62, 193,722.18 and 79,949.26
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Solution
The fourth proportional to 140,378.62, 193,722.18 and 79,949.26 is: 110,329.80
Step by Step Solution
- Step 1: Write the proportion equation
140,378.62 : 193,722.18 = 79,949.26 : x - Step 2: Convert to fraction form
140,378.62/193,722.18 = 79,949.26/x - Step 3: Cross multiply
140,378.62x = 193,722.18 × 79,949.26 - Step 4: Simplify right side
140,378.62x = 15,487,944,936.59 - Step 5: Solve for x
x = 15,487,944,936.59/140,378.62 - Step 6: Final answer
x = 110,329.80
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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.