Finding the Fourth Proportional to 115,245.14, 172,865.97 and 70,279.70
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Solution
The fourth proportional to 115,245.14, 172,865.97 and 70,279.70 is: 105,418.49
Step by Step Solution
- Step 1: Write the proportion equation
115,245.14 : 172,865.97 = 70,279.70 : x - Step 2: Convert to fraction form
115,245.14/172,865.97 = 70,279.70/x - Step 3: Cross multiply
115,245.14x = 172,865.97 × 70,279.70 - Step 4: Simplify right side
115,245.14x = 12,148,968,511.81 - Step 5: Solve for x
x = 12,148,968,511.81/115,245.14 - Step 6: Final answer
x = 105,418.49
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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.