Finding the Fourth Proportional to 120,108.70, 180,163.05 and 61,059.70
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Solution
The fourth proportional to 120,108.70, 180,163.05 and 61,059.70 is: 91,589.55
Step by Step Solution
- Step 1: Write the proportion equation
120,108.70 : 180,163.05 = 61,059.70 : x - Step 2: Convert to fraction form
120,108.70/180,163.05 = 61,059.70/x - Step 3: Cross multiply
120,108.70x = 180,163.05 × 61,059.70 - Step 4: Simplify right side
120,108.70x = 11,000,701,784.09 - Step 5: Solve for x
x = 11,000,701,784.09/120,108.70 - Step 6: Final answer
x = 91,589.55
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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.