Finding the Fourth Proportional to 129,762.60, 194,708.70 and 73,645.80
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Solution
The fourth proportional to 129,762.60, 194,708.70 and 73,645.80 is: 110,505.48
Step by Step Solution
- Step 1: Write the proportion equation
129,762.60 : 194,708.70 = 73,645.80 : x - Step 2: Convert to fraction form
129,762.60/194,708.70 = 73,645.80/x - Step 3: Cross multiply
129,762.60x = 194,708.70 × 73,645.80 - Step 4: Simplify right side
129,762.60x = 14,339,477,978.46 - Step 5: Solve for x
x = 14,339,477,978.46/129,762.60 - Step 6: Final answer
x = 110,505.48
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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.