Finding the Fourth Proportional to 280,078.08, 420,014.19 and 100,114.95
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Solution
The fourth proportional to 280,078.08, 420,014.19 and 100,114.95 is: 150,135.63
Step by Step Solution
- Step 1: Write the proportion equation
280,078.08 : 420,014.19 = 100,114.95 : x - Step 2: Convert to fraction form
280,078.08/420,014.19 = 100,114.95/x - Step 3: Cross multiply
280,078.08x = 420,014.19 × 100,114.95 - Step 4: Simplify right side
280,078.08x = 42,049,699,631.14 - Step 5: Solve for x
x = 42,049,699,631.14/280,078.08 - Step 6: Final answer
x = 150,135.63
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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.