Finding the Fourth Proportional to 138,662.87, 207,978.24 and 38,831.06
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Solution
The fourth proportional to 138,662.87, 207,978.24 and 38,831.06 is: 58,242.09
Step by Step Solution
- Step 1: Write the proportion equation
138,662.87 : 207,978.24 = 38,831.06 : x - Step 2: Convert to fraction form
138,662.87/207,978.24 = 38,831.06/x - Step 3: Cross multiply
138,662.87x = 207,978.24 × 38,831.06 - Step 4: Simplify right side
138,662.87x = 8,076,015,516.13 - Step 5: Solve for x
x = 8,076,015,516.13/138,662.87 - Step 6: Final answer
x = 58,242.09
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.