Finding the Fourth Proportional to 120,113.07, 180,169.62 and 31,365.79
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Solution
The fourth proportional to 120,113.07, 180,169.62 and 31,365.79 is: 47,048.69
Step by Step Solution
- Step 1: Write the proportion equation
120,113.07 : 180,169.62 = 31,365.79 : x - Step 2: Convert to fraction form
120,113.07/180,169.62 = 31,365.79/x - Step 3: Cross multiply
120,113.07x = 180,169.62 × 31,365.79 - Step 4: Simplify right side
120,113.07x = 5,651,162,465.30 - Step 5: Solve for x
x = 5,651,162,465.30/120,113.07 - Step 6: Final answer
x = 47,048.69
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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.