Finding the Fourth Proportional to 138,291.21, 207,452.87 and 48,306.07
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Solution
The fourth proportional to 138,291.21, 207,452.87 and 48,306.07 is: 72,464.71
Step by Step Solution
- Step 1: Write the proportion equation
138,291.21 : 207,452.87 = 48,306.07 : x - Step 2: Convert to fraction form
138,291.21/207,452.87 = 48,306.07/x - Step 3: Cross multiply
138,291.21x = 207,452.87 × 48,306.07 - Step 4: Simplify right side
138,291.21x = 10,021,232,859.92 - Step 5: Solve for x
x = 10,021,232,859.92/138,291.21 - Step 6: Final answer
x = 72,464.71
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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.