Finding the Fourth Proportional to 122,106.60, 183,159.90 and 68,743.80
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Solution
The fourth proportional to 122,106.60, 183,159.90 and 68,743.80 is: 103,115.70
Step by Step Solution
- Step 1: Write the proportion equation
122,106.60 : 183,159.90 = 68,743.80 : x - Step 2: Convert to fraction form
122,106.60/183,159.90 = 68,743.80/x - Step 3: Cross multiply
122,106.60x = 183,159.90 × 68,743.80 - Step 4: Simplify right side
122,106.60x = 12,591,107,533.62 - Step 5: Solve for x
x = 12,591,107,533.62/122,106.60 - Step 6: Final answer
x = 103,115.70
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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.