Finding the Fourth Proportional to 129,031,284.80, 193,546,927.20 and 128,135,489.60
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Solution
The fourth proportional to 129,031,284.80, 193,546,927.20 and 128,135,489.60 is: 192,203,234.40
Step by Step Solution
- Step 1: Write the proportion equation
129,031,284.80 : 193,546,927.20 = 128,135,489.60 : x - Step 2: Convert to fraction form
129,031,284.80/193,546,927.20 = 128,135,489.60/x - Step 3: Cross multiply
129,031,284.80x = 193,546,927.20 × 128,135,489.60 - Step 4: Simplify right side
129,031,284.80x = 24,800,230,277,347,556 - Step 5: Solve for x
x = 24,800,230,277,347,556/129,031,284.80 - Step 6: Final answer
x = 192,203,234.40
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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.