Finding the Fourth Proportional to 178,783.20, 268,233.06 and 85,276.80
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Solution
The fourth proportional to 178,783.20, 268,233.06 and 85,276.80 is: 127,942.99
Step by Step Solution
- Step 1: Write the proportion equation
178,783.20 : 268,233.06 = 85,276.80 : x - Step 2: Convert to fraction form
178,783.20/268,233.06 = 85,276.80/x - Step 3: Cross multiply
178,783.20x = 268,233.06 × 85,276.80 - Step 4: Simplify right side
178,783.20x = 22,874,057,011.01 - Step 5: Solve for x
x = 22,874,057,011.01/178,783.20 - Step 6: Final answer
x = 127,942.99
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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.