Finding the Fourth Proportional to 135,879.36, 187,507.25 and 75,453.84
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Solution
The fourth proportional to 135,879.36, 187,507.25 and 75,453.84 is: 104,122.82
Step by Step Solution
- Step 1: Write the proportion equation
135,879.36 : 187,507.25 = 75,453.84 : x - Step 2: Convert to fraction form
135,879.36/187,507.25 = 75,453.84/x - Step 3: Cross multiply
135,879.36x = 187,507.25 × 75,453.84 - Step 4: Simplify right side
135,879.36x = 14,148,141,663.07 - Step 5: Solve for x
x = 14,148,141,663.07/135,879.36 - Step 6: Final answer
x = 104,122.82
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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.