Finding the Fourth Proportional to 122,115.60, 183,610.80 and 119,491.20
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Solution
The fourth proportional to 122,115.60, 183,610.80 and 119,491.20 is: 179,664.80
Step by Step Solution
- Step 1: Write the proportion equation
122,115.60 : 183,610.80 = 119,491.20 : x - Step 2: Convert to fraction form
122,115.60/183,610.80 = 119,491.20/x - Step 3: Cross multiply
122,115.60x = 183,610.80 × 119,491.20 - Step 4: Simplify right side
122,115.60x = 21,939,874,824.96 - Step 5: Solve for x
x = 21,939,874,824.96/122,115.60 - Step 6: Final answer
x = 179,664.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.