Finding the Fourth Proportional to 120,503.10, 166,289.85 and 66,792.99
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Solution
The fourth proportional to 120,503.10, 166,289.85 and 66,792.99 is: 92,171.87
Step by Step Solution
- Step 1: Write the proportion equation
120,503.10 : 166,289.85 = 66,792.99 : x - Step 2: Convert to fraction form
120,503.10/166,289.85 = 66,792.99/x - Step 3: Cross multiply
120,503.10x = 166,289.85 × 66,792.99 - Step 4: Simplify right side
120,503.10x = 11,106,996,288.15 - Step 5: Solve for x
x = 11,106,996,288.15/120,503.10 - Step 6: Final answer
x = 92,171.87
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.