Finding the Fourth Proportional to 138,352.80, 207,529.20 and 122,023.20
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Solution
The fourth proportional to 138,352.80, 207,529.20 and 122,023.20 is: 183,034.80
Step by Step Solution
- Step 1: Write the proportion equation
138,352.80 : 207,529.20 = 122,023.20 : x - Step 2: Convert to fraction form
138,352.80/207,529.20 = 122,023.20/x - Step 3: Cross multiply
138,352.80x = 207,529.20 × 122,023.20 - Step 4: Simplify right side
138,352.80x = 25,323,377,077.44 - Step 5: Solve for x
x = 25,323,377,077.44/138,352.80 - Step 6: Final answer
x = 183,034.80
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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.