Finding the Fourth Proportional to 122,608.77, 183,911.97 and 72,652.90
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Solution
The fourth proportional to 122,608.77, 183,911.97 and 72,652.90 is: 108,978.65
Step by Step Solution
- Step 1: Write the proportion equation
122,608.77 : 183,911.97 = 72,652.90 : x - Step 2: Convert to fraction form
122,608.77/183,911.97 = 72,652.90/x - Step 3: Cross multiply
122,608.77x = 183,911.97 × 72,652.90 - Step 4: Simplify right side
122,608.77x = 13,361,737,965.21 - Step 5: Solve for x
x = 13,361,737,965.21/122,608.77 - Step 6: Final answer
x = 108,978.65
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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.