Finding the Fourth Proportional to 189,789.12, 261,923.76 and 104,914.08
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Solution
The fourth proportional to 189,789.12, 261,923.76 and 104,914.08 is: 144,789.60
Step by Step Solution
- Step 1: Write the proportion equation
189,789.12 : 261,923.76 = 104,914.08 : x - Step 2: Convert to fraction form
189,789.12/261,923.76 = 104,914.08/x - Step 3: Cross multiply
189,789.12x = 261,923.76 × 104,914.08 - Step 4: Simplify right side
189,789.12x = 27,479,490,310.54 - Step 5: Solve for x
x = 27,479,490,310.54/189,789.12 - Step 6: Final answer
x = 144,789.60
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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.