Finding the Fourth Proportional to 118,831.36, 178,286.74 and 38,872.96
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Solution
The fourth proportional to 118,831.36, 178,286.74 and 38,872.96 is: 58,322.43
Step by Step Solution
- Step 1: Write the proportion equation
118,831.36 : 178,286.74 = 38,872.96 : x - Step 2: Convert to fraction form
118,831.36/178,286.74 = 38,872.96/x - Step 3: Cross multiply
118,831.36x = 178,286.74 × 38,872.96 - Step 4: Simplify right side
118,831.36x = 6,930,533,312.55 - Step 5: Solve for x
x = 6,930,533,312.55/118,831.36 - Step 6: Final answer
x = 58,322.43
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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.