Finding the Fourth Proportional to 135,905.20, 203,857.80 and 73,697.20
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Solution
The fourth proportional to 135,905.20, 203,857.80 and 73,697.20 is: 110,545.80
Step by Step Solution
- Step 1: Write the proportion equation
135,905.20 : 203,857.80 = 73,697.20 : x - Step 2: Convert to fraction form
135,905.20/203,857.80 = 73,697.20/x - Step 3: Cross multiply
135,905.20x = 203,857.80 × 73,697.20 - Step 4: Simplify right side
135,905.20x = 15,023,749,058.16 - Step 5: Solve for x
x = 15,023,749,058.16/135,905.20 - Step 6: Final answer
x = 110,545.80
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1.5x scale
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.