Finding the Fourth Proportional to 118,908.96, 178,390.74 and 40,021.08
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Solution
The fourth proportional to 118,908.96, 178,390.74 and 40,021.08 is: 60,040.81
Step by Step Solution
- Step 1: Write the proportion equation
118,908.96 : 178,390.74 = 40,021.08 : x - Step 2: Convert to fraction form
118,908.96/178,390.74 = 40,021.08/x - Step 3: Cross multiply
118,908.96x = 178,390.74 × 40,021.08 - Step 4: Simplify right side
118,908.96x = 7,139,390,076.80 - Step 5: Solve for x
x = 7,139,390,076.80/118,908.96 - Step 6: Final answer
x = 60,040.81
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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.