Finding the Fourth Proportional to 203,119.89, 280,285.88 and 121,431.99
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Solution
The fourth proportional to 203,119.89, 280,285.88 and 121,431.99 is: 167,564.45
Step by Step Solution
- Step 1: Write the proportion equation
203,119.89 : 280,285.88 = 121,431.99 : x - Step 2: Convert to fraction form
203,119.89/280,285.88 = 121,431.99/x - Step 3: Cross multiply
203,119.89x = 280,285.88 × 121,431.99 - Step 4: Simplify right side
203,119.89x = 34,035,672,177.30 - Step 5: Solve for x
x = 34,035,672,177.30/203,119.89 - Step 6: Final answer
x = 167,564.45
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.