Finding the Fourth Proportional to 140,385.69, 193,732.29 and 79,961.99
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Solution
The fourth proportional to 140,385.69, 193,732.29 and 79,961.99 is: 110,347.56
Step by Step Solution
- Step 1: Write the proportion equation
140,385.69 : 193,732.29 = 79,961.99 : x - Step 2: Convert to fraction form
140,385.69/193,732.29 = 79,961.99/x - Step 3: Cross multiply
140,385.69x = 193,732.29 × 79,961.99 - Step 4: Simplify right side
140,385.69x = 15,491,218,467.00 - Step 5: Solve for x
x = 15,491,218,467.00/140,385.69 - Step 6: Final answer
x = 110,347.56
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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.