Finding the Fourth Proportional to 128,903.14, 193,354.71 and 40,163.82
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Solution
The fourth proportional to 128,903.14, 193,354.71 and 40,163.82 is: 60,245.73
Step by Step Solution
- Step 1: Write the proportion equation
128,903.14 : 193,354.71 = 40,163.82 : x - Step 2: Convert to fraction form
128,903.14/193,354.71 = 40,163.82/x - Step 3: Cross multiply
128,903.14x = 193,354.71 × 40,163.82 - Step 4: Simplify right side
128,903.14x = 7,765,863,768.59 - Step 5: Solve for x
x = 7,765,863,768.59/128,903.14 - Step 6: Final answer
x = 60,245.73
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.