Finding the Fourth Proportional to 118,959.68, 178,439.76 and 40,129.20
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Solution
The fourth proportional to 118,959.68, 178,439.76 and 40,129.20 is: 60,193.88
Step by Step Solution
- Step 1: Write the proportion equation
118,959.68 : 178,439.76 = 40,129.20 : x - Step 2: Convert to fraction form
118,959.68/178,439.76 = 40,129.20/x - Step 3: Cross multiply
118,959.68x = 178,439.76 × 40,129.20 - Step 4: Simplify right side
118,959.68x = 7,160,644,816.99 - Step 5: Solve for x
x = 7,160,644,816.99/118,959.68 - Step 6: Final answer
x = 60,193.88
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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.