Finding the Fourth Proportional to 103,415.26, 155,119.81 and 28,539.89
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Solution
The fourth proportional to 103,415.26, 155,119.81 and 28,539.89 is: 42,808.99
Step by Step Solution
- Step 1: Write the proportion equation
103,415.26 : 155,119.81 = 28,539.89 : x - Step 2: Convert to fraction form
103,415.26/155,119.81 = 28,539.89/x - Step 3: Cross multiply
103,415.26x = 155,119.81 × 28,539.89 - Step 4: Simplify right side
103,415.26x = 4,427,102,975.03 - Step 5: Solve for x
x = 4,427,102,975.03/103,415.26 - Step 6: Final answer
x = 42,808.99
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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.