Finding the Fourth Proportional to 140,387.19, 193,734.36 and 79,963.49
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Solution
The fourth proportional to 140,387.19, 193,734.36 and 79,963.49 is: 110,349.63
Step by Step Solution
- Step 1: Write the proportion equation
140,387.19 : 193,734.36 = 79,963.49 : x - Step 2: Convert to fraction form
140,387.19/193,734.36 = 79,963.49/x - Step 3: Cross multiply
140,387.19x = 193,734.36 × 79,963.49 - Step 4: Simplify right side
140,387.19x = 15,491,674,589.84 - Step 5: Solve for x
x = 15,491,674,589.84/140,387.19 - Step 6: Final answer
x = 110,349.63
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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.