Finding the Fourth Proportional to 120,734.79, 166,621.80 and 69,749.70
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Solution
The fourth proportional to 120,734.79, 166,621.80 and 69,749.70 is: 96,259.09
Step by Step Solution
- Step 1: Write the proportion equation
120,734.79 : 166,621.80 = 69,749.70 : x - Step 2: Convert to fraction form
120,734.79/166,621.80 = 69,749.70/x - Step 3: Cross multiply
120,734.79x = 166,621.80 × 69,749.70 - Step 4: Simplify right side
120,734.79x = 11,621,820,563.46 - Step 5: Solve for x
x = 11,621,820,563.46/120,734.79 - Step 6: Final answer
x = 96,259.09
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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.