Finding the Fourth Proportional to 120,563.67, 180,820.80 and 45,657.99
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Solution
The fourth proportional to 120,563.67, 180,820.80 and 45,657.99 is: 68,477.63
Step by Step Solution
- Step 1: Write the proportion equation
120,563.67 : 180,820.80 = 45,657.99 : x - Step 2: Convert to fraction form
120,563.67/180,820.80 = 45,657.99/x - Step 3: Cross multiply
120,563.67x = 180,820.80 × 45,657.99 - Step 4: Simplify right side
120,563.67x = 8,255,914,278.19 - Step 5: Solve for x
x = 8,255,914,278.19/120,563.67 - Step 6: Final answer
x = 68,477.63
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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.