Finding the Fourth Proportional to 129,327.60, 194,137.20 and 76,766.70
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Solution
The fourth proportional to 129,327.60, 194,137.20 and 76,766.70 is: 115,236.59
Step by Step Solution
- Step 1: Write the proportion equation
129,327.60 : 194,137.20 = 76,766.70 : x - Step 2: Convert to fraction form
129,327.60/194,137.20 = 76,766.70/x - Step 3: Cross multiply
129,327.60x = 194,137.20 × 76,766.70 - Step 4: Simplify right side
129,327.60x = 14,903,272,191.24 - Step 5: Solve for x
x = 14,903,272,191.24/129,327.60 - Step 6: Final answer
x = 115,236.59
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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.