Finding the Fourth Proportional to 120,689.37, 166,563.63 and 66,974.76
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Solution
The fourth proportional to 120,689.37, 166,563.63 and 66,974.76 is: 92,431.99
Step by Step Solution
- Step 1: Write the proportion equation
120,689.37 : 166,563.63 = 66,974.76 : x - Step 2: Convert to fraction form
120,689.37/166,563.63 = 66,974.76/x - Step 3: Cross multiply
120,689.37x = 166,563.63 × 66,974.76 - Step 4: Simplify right side
120,689.37x = 11,155,559,143.98 - Step 5: Solve for x
x = 11,155,559,143.98/120,689.37 - Step 6: Final answer
x = 92,431.99
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1.5x scale
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.