Finding the Fourth Proportional to 140,115.21, 193,358.63 and 76,452.96
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Solution
The fourth proportional to 140,115.21, 193,358.63 and 76,452.96 is: 105,504.89
Step by Step Solution
- Step 1: Write the proportion equation
140,115.21 : 193,358.63 = 76,452.96 : x - Step 2: Convert to fraction form
140,115.21/193,358.63 = 76,452.96/x - Step 3: Cross multiply
140,115.21x = 193,358.63 × 76,452.96 - Step 4: Simplify right side
140,115.21x = 14,782,839,222.78 - Step 5: Solve for x
x = 14,782,839,222.78/140,115.21 - Step 6: Final answer
x = 105,504.89
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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.