Finding the Fourth Proportional to 120,348.63, 166,083.70 and 65,903.09
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Solution
The fourth proportional to 120,348.63, 166,083.70 and 65,903.09 is: 90,947.68
Step by Step Solution
- Step 1: Write the proportion equation
120,348.63 : 166,083.70 = 65,903.09 : x - Step 2: Convert to fraction form
120,348.63/166,083.70 = 65,903.09/x - Step 3: Cross multiply
120,348.63x = 166,083.70 × 65,903.09 - Step 4: Simplify right side
120,348.63x = 10,945,429,279.08 - Step 5: Solve for x
x = 10,945,429,279.08/120,348.63 - Step 6: Final answer
x = 90,947.68
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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.