Finding the Fourth Proportional to 134,631.09, 201,755.95 and 74,685.76
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Solution
The fourth proportional to 134,631.09, 201,755.95 and 74,685.76 is: 111,922.86
Step by Step Solution
- Step 1: Write the proportion equation
134,631.09 : 201,755.95 = 74,685.76 : x - Step 2: Convert to fraction form
134,631.09/201,755.95 = 74,685.76/x - Step 3: Cross multiply
134,631.09x = 201,755.95 × 74,685.76 - Step 4: Simplify right side
134,631.09x = 15,068,295,769.17 - Step 5: Solve for x
x = 15,068,295,769.17/134,631.09 - Step 6: Final answer
x = 111,922.86
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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.