Finding the Fourth Proportional to 120,410.31, 180,615.89 and 40,445.99
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Solution
The fourth proportional to 120,410.31, 180,615.89 and 40,445.99 is: 60,669.12
Step by Step Solution
- Step 1: Write the proportion equation
120,410.31 : 180,615.89 = 40,445.99 : x - Step 2: Convert to fraction form
120,410.31/180,615.89 = 40,445.99/x - Step 3: Cross multiply
120,410.31x = 180,615.89 × 40,445.99 - Step 4: Simplify right side
120,410.31x = 7,305,187,375.47 - Step 5: Solve for x
x = 7,305,187,375.47/120,410.31 - Step 6: Final answer
x = 60,669.12
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1.5x scale
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.