Finding the Fourth Proportional to 171,938.20, 257,907.30 and 157,163.80
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Solution
The fourth proportional to 171,938.20, 257,907.30 and 157,163.80 is: 235,745.70
Step by Step Solution
- Step 1: Write the proportion equation
171,938.20 : 257,907.30 = 157,163.80 : x - Step 2: Convert to fraction form
171,938.20/257,907.30 = 157,163.80/x - Step 3: Cross multiply
171,938.20x = 257,907.30 × 157,163.80 - Step 4: Simplify right side
171,938.20x = 40,533,691,315.74 - Step 5: Solve for x
x = 40,533,691,315.74/171,938.20 - Step 6: Final answer
x = 235,745.70
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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.