Finding the Fourth Proportional to 122,712.44, 183,957.94 and 85,290.14
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Solution
The fourth proportional to 122,712.44, 183,957.94 and 85,290.14 is: 127,858.26
Step by Step Solution
- Step 1: Write the proportion equation
122,712.44 : 183,957.94 = 85,290.14 : x - Step 2: Convert to fraction form
122,712.44/183,957.94 = 85,290.14/x - Step 3: Cross multiply
122,712.44x = 183,957.94 × 85,290.14 - Step 4: Simplify right side
122,712.44x = 15,689,798,456.71 - Step 5: Solve for x
x = 15,689,798,456.71/122,712.44 - Step 6: Final answer
x = 127,858.26
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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.