Finding the Fourth Proportional to 118,853.12, 178,213.92 and 48,781.76
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Solution
The fourth proportional to 118,853.12, 178,213.92 and 48,781.76 is: 73,145.65
Step by Step Solution
- Step 1: Write the proportion equation
118,853.12 : 178,213.92 = 48,781.76 : x - Step 2: Convert to fraction form
118,853.12/178,213.92 = 48,781.76/x - Step 3: Cross multiply
118,853.12x = 178,213.92 × 48,781.76 - Step 4: Simplify right side
118,853.12x = 8,693,588,674.10 - Step 5: Solve for x
x = 8,693,588,674.10/118,853.12 - Step 6: Final answer
x = 73,145.65
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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.