Finding the Fourth Proportional to 104,137.79, 143,709.94 and 56,390.99
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Solution
The fourth proportional to 104,137.79, 143,709.94 and 56,390.99 is: 77,819.45
Step by Step Solution
- Step 1: Write the proportion equation
104,137.79 : 143,709.94 = 56,390.99 : x - Step 2: Convert to fraction form
104,137.79/143,709.94 = 56,390.99/x - Step 3: Cross multiply
104,137.79x = 143,709.94 × 56,390.99 - Step 4: Simplify right side
104,137.79x = 8,103,945,789.44 - Step 5: Solve for x
x = 8,103,945,789.44/104,137.79 - Step 6: Final answer
x = 77,819.45
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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.