Finding the Fourth Proportional to 138,464.30, 207,698.11 and 38,618.41
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Solution
The fourth proportional to 138,464.30, 207,698.11 and 38,618.41 is: 57,928.08
Step by Step Solution
- Step 1: Write the proportion equation
138,464.30 : 207,698.11 = 38,618.41 : x - Step 2: Convert to fraction form
138,464.30/207,698.11 = 38,618.41/x - Step 3: Cross multiply
138,464.30x = 207,698.11 × 38,618.41 - Step 4: Simplify right side
138,464.30x = 8,020,970,152.41 - Step 5: Solve for x
x = 8,020,970,152.41/138,464.30 - Step 6: Final answer
x = 57,928.08
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1.5x scale
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.