Finding the Fourth Proportional to 109,869.13, 164,634.07 and 74,190.62
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Solution
The fourth proportional to 109,869.13, 164,634.07 and 74,190.62 is: 111,171.39
Step by Step Solution
- Step 1: Write the proportion equation
109,869.13 : 164,634.07 = 74,190.62 : x - Step 2: Convert to fraction form
109,869.13/164,634.07 = 74,190.62/x - Step 3: Cross multiply
109,869.13x = 164,634.07 × 74,190.62 - Step 4: Simplify right side
109,869.13x = 12,214,303,952.53 - Step 5: Solve for x
x = 12,214,303,952.53/109,869.13 - Step 6: Final answer
x = 111,171.39
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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.