Finding the Fourth Proportional to 86,193,313.20, 129,289,969.80 and 86,193,313.20
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Solution
The fourth proportional to 86,193,313.20, 129,289,969.80 and 86,193,313.20 is: 129,289,969.80
Step by Step Solution
- Step 1: Write the proportion equation
86,193,313.20 : 129,289,969.80 = 86,193,313.20 : x - Step 2: Convert to fraction form
86,193,313.20/129,289,969.80 = 86,193,313.20/x - Step 3: Cross multiply
86,193,313.20x = 129,289,969.80 × 86,193,313.20 - Step 4: Simplify right side
86,193,313.20x = 11,143,930,860,589,942 - Step 5: Solve for x
x = 11,143,930,860,589,942/86,193,313.20 - Step 6: Final answer
x = 129,289,969.80
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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.