Finding the Fourth Proportional to 203,507.70, 280,821.81 and 112,861.99
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Solution
The fourth proportional to 203,507.70, 280,821.81 and 112,861.99 is: 155,739.11
Step by Step Solution
- Step 1: Write the proportion equation
203,507.70 : 280,821.81 = 112,861.99 : x - Step 2: Convert to fraction form
203,507.70/280,821.81 = 112,861.99/x - Step 3: Cross multiply
203,507.70x = 280,821.81 × 112,861.99 - Step 4: Simplify right side
203,507.70x = 31,694,108,312.00 - Step 5: Solve for x
x = 31,694,108,312.00/203,507.70 - Step 6: Final answer
x = 155,739.11
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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.