Finding the Fourth Proportional to 203,189.39, 280,405.90 and 115,972.75
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Solution
The fourth proportional to 203,189.39, 280,405.90 and 115,972.75 is: 160,044.99
Step by Step Solution
- Step 1: Write the proportion equation
203,189.39 : 280,405.90 = 115,972.75 : x - Step 2: Convert to fraction form
203,189.39/280,405.90 = 115,972.75/x - Step 3: Cross multiply
203,189.39x = 280,405.90 × 115,972.75 - Step 4: Simplify right side
203,189.39x = 32,519,443,440.38 - Step 5: Solve for x
x = 32,519,443,440.38/203,189.39 - Step 6: Final answer
x = 160,044.99
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1.5x scale
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.