Finding the Fourth Proportional to 118,748.32, 178,122.84 and 28,790.68
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Solution
The fourth proportional to 118,748.32, 178,122.84 and 28,790.68 is: 43,186.11
Step by Step Solution
- Step 1: Write the proportion equation
118,748.32 : 178,122.84 = 28,790.68 : x - Step 2: Convert to fraction form
118,748.32/178,122.84 = 28,790.68/x - Step 3: Cross multiply
118,748.32x = 178,122.84 × 28,790.68 - Step 4: Simplify right side
118,748.32x = 5,128,277,687.13 - Step 5: Solve for x
x = 5,128,277,687.13/118,748.32 - Step 6: Final answer
x = 43,186.11
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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.