Finding the Fourth Proportional to 103,425.80, 155,138.70 and 73,245.20
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Solution
The fourth proportional to 103,425.80, 155,138.70 and 73,245.20 is: 109,867.80
Step by Step Solution
- Step 1: Write the proportion equation
103,425.80 : 155,138.70 = 73,245.20 : x - Step 2: Convert to fraction form
103,425.80/155,138.70 = 73,245.20/x - Step 3: Cross multiply
103,425.80x = 155,138.70 × 73,245.20 - Step 4: Simplify right side
103,425.80x = 11,363,165,109.24 - Step 5: Solve for x
x = 11,363,165,109.24/103,425.80 - Step 6: Final answer
x = 109,867.80
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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.