Finding the Fourth Proportional to 207,842.60, 311,763.90 and 74,727.20
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Solution
The fourth proportional to 207,842.60, 311,763.90 and 74,727.20 is: 112,090.80
Step by Step Solution
- Step 1: Write the proportion equation
207,842.60 : 311,763.90 = 74,727.20 : x - Step 2: Convert to fraction form
207,842.60/311,763.90 = 74,727.20/x - Step 3: Cross multiply
207,842.60x = 311,763.90 × 74,727.20 - Step 4: Simplify right side
207,842.60x = 23,297,243,308.08 - Step 5: Solve for x
x = 23,297,243,308.08/207,842.60 - Step 6: Final answer
x = 112,090.80
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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.