Finding the Fourth Proportional to 121,919.19, 182,884.91 and 38,819.67
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Solution
The fourth proportional to 121,919.19, 182,884.91 and 38,819.67 is: 58,231.45
Step by Step Solution
- Step 1: Write the proportion equation
121,919.19 : 182,884.91 = 38,819.67 : x - Step 2: Convert to fraction form
121,919.19/182,884.91 = 38,819.67/x - Step 3: Cross multiply
121,919.19x = 182,884.91 × 38,819.67 - Step 4: Simplify right side
121,919.19x = 7,099,531,660.08 - Step 5: Solve for x
x = 7,099,531,660.08/121,919.19 - Step 6: Final answer
x = 58,231.45
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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.