Finding the Fourth Proportional to 135,905.10, 203,201.55 and 100,475.70
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Solution
The fourth proportional to 135,905.10, 203,201.55 and 100,475.70 is: 150,228.49
Step by Step Solution
- Step 1: Write the proportion equation
135,905.10 : 203,201.55 = 100,475.70 : x - Step 2: Convert to fraction form
135,905.10/203,201.55 = 100,475.70/x - Step 3: Cross multiply
135,905.10x = 203,201.55 × 100,475.70 - Step 4: Simplify right side
135,905.10x = 20,416,817,977.34 - Step 5: Solve for x
x = 20,416,817,977.34/135,905.10 - Step 6: Final answer
x = 150,228.49
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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.