Finding the Fourth Proportional to 145,861.75, 201,289.40 and 78,793.75
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Solution
The fourth proportional to 145,861.75, 201,289.40 and 78,793.75 is: 108,735.47
Step by Step Solution
- Step 1: Write the proportion equation
145,861.75 : 201,289.40 = 78,793.75 : x - Step 2: Convert to fraction form
145,861.75/201,289.40 = 78,793.75/x - Step 3: Cross multiply
145,861.75x = 201,289.40 × 78,793.75 - Step 4: Simplify right side
145,861.75x = 15,860,346,661.25 - Step 5: Solve for x
x = 15,860,346,661.25/145,861.75 - Step 6: Final answer
x = 108,735.47
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.