Finding the Fourth Proportional to 189,624.63, 261,679.73 and 103,582.56
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Solution
The fourth proportional to 189,624.63, 261,679.73 and 103,582.56 is: 142,942.70
Step by Step Solution
- Step 1: Write the proportion equation
189,624.63 : 261,679.73 = 103,582.56 : x - Step 2: Convert to fraction form
189,624.63/261,679.73 = 103,582.56/x - Step 3: Cross multiply
189,624.63x = 261,679.73 × 103,582.56 - Step 4: Simplify right side
189,624.63x = 27,105,455,815.60 - Step 5: Solve for x
x = 27,105,455,815.60/189,624.63 - Step 6: Final answer
x = 142,942.70
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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.