Finding the Fourth Proportional to 103,631.67, 155,447.49 and 68,563.14
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Solution
The fourth proportional to 103,631.67, 155,447.49 and 68,563.14 is: 102,844.70
Step by Step Solution
- Step 1: Write the proportion equation
103,631.67 : 155,447.49 = 68,563.14 : x - Step 2: Convert to fraction form
103,631.67/155,447.49 = 68,563.14/x - Step 3: Cross multiply
103,631.67x = 155,447.49 × 68,563.14 - Step 4: Simplify right side
103,631.67x = 10,657,968,019.52 - Step 5: Solve for x
x = 10,657,968,019.52/103,631.67 - Step 6: Final answer
x = 102,844.70
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1.5x scale
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.