Finding the Fourth Proportional to 122,638.60, 183,957.90 and 102,809.80
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Solution
The fourth proportional to 122,638.60, 183,957.90 and 102,809.80 is: 154,214.70
Step by Step Solution
- Step 1: Write the proportion equation
122,638.60 : 183,957.90 = 102,809.80 : x - Step 2: Convert to fraction form
122,638.60/183,957.90 = 102,809.80/x - Step 3: Cross multiply
122,638.60x = 183,957.90 × 102,809.80 - Step 4: Simplify right side
122,638.60x = 18,912,674,907.42 - Step 5: Solve for x
x = 18,912,674,907.42/122,638.60 - Step 6: Final answer
x = 154,214.70
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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.