Finding the Fourth Proportional to 138,478.93, 207,753.42 and 38,639.08
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Solution
The fourth proportional to 138,478.93, 207,753.42 and 38,639.08 is: 57,968.39
Step by Step Solution
- Step 1: Write the proportion equation
138,478.93 : 207,753.42 = 38,639.08 : x - Step 2: Convert to fraction form
138,478.93/207,753.42 = 38,639.08/x - Step 3: Cross multiply
138,478.93x = 207,753.42 × 38,639.08 - Step 4: Simplify right side
138,478.93x = 8,027,401,015.65 - Step 5: Solve for x
x = 8,027,401,015.65/138,478.93 - Step 6: Final answer
x = 57,968.39
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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.