Finding the Fourth Proportional to 135,709.87, 203,357.22 and 72,538.98
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Solution
The fourth proportional to 135,709.87, 203,357.22 and 72,538.98 is: 108,697.52
Step by Step Solution
- Step 1: Write the proportion equation
135,709.87 : 203,357.22 = 72,538.98 : x - Step 2: Convert to fraction form
135,709.87/203,357.22 = 72,538.98/x - Step 3: Cross multiply
135,709.87x = 203,357.22 × 72,538.98 - Step 4: Simplify right side
135,709.87x = 14,751,326,077.03 - Step 5: Solve for x
x = 14,751,326,077.03/135,709.87 - Step 6: Final answer
x = 108,697.52
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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.