Finding the Fourth Proportional to 114,512.20, 171,768.30 and 84,987.70
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Solution
The fourth proportional to 114,512.20, 171,768.30 and 84,987.70 is: 127,481.55
Step by Step Solution
- Step 1: Write the proportion equation
114,512.20 : 171,768.30 = 84,987.70 : x - Step 2: Convert to fraction form
114,512.20/171,768.30 = 84,987.70/x - Step 3: Cross multiply
114,512.20x = 171,768.30 × 84,987.70 - Step 4: Simplify right side
114,512.20x = 14,598,192,749.91 - Step 5: Solve for x
x = 14,598,192,749.91/114,512.20 - Step 6: Final answer
x = 127,481.55
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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.