Finding the Fourth Proportional to 135,679.56, 187,235.20 and 75,249.92
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Solution
The fourth proportional to 135,679.56, 187,235.20 and 75,249.92 is: 103,843.45
Step by Step Solution
- Step 1: Write the proportion equation
135,679.56 : 187,235.20 = 75,249.92 : x - Step 2: Convert to fraction form
135,679.56/187,235.20 = 75,249.92/x - Step 3: Cross multiply
135,679.56x = 187,235.20 × 75,249.92 - Step 4: Simplify right side
135,679.56x = 14,089,433,821.18 - Step 5: Solve for x
x = 14,089,433,821.18/135,679.56 - Step 6: Final answer
x = 103,843.45
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1.5x scale
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.