Finding the Fourth Proportional to 103,433.20, 155,149.80 and 68,003.80
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Solution
The fourth proportional to 103,433.20, 155,149.80 and 68,003.80 is: 102,005.70
Step by Step Solution
- Step 1: Write the proportion equation
103,433.20 : 155,149.80 = 68,003.80 : x - Step 2: Convert to fraction form
103,433.20/155,149.80 = 68,003.80/x - Step 3: Cross multiply
103,433.20x = 155,149.80 × 68,003.80 - Step 4: Simplify right side
103,433.20x = 10,550,775,969.24 - Step 5: Solve for x
x = 10,550,775,969.24/103,433.20 - Step 6: Final answer
x = 102,005.70
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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.