Finding the Fourth Proportional to 135,638.76, 187,183.74 and 75,211.96
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Solution
The fourth proportional to 135,638.76, 187,183.74 and 75,211.96 is: 103,793.75
Step by Step Solution
- Step 1: Write the proportion equation
135,638.76 : 187,183.74 = 75,211.96 : x - Step 2: Convert to fraction form
135,638.76/187,183.74 = 75,211.96/x - Step 3: Cross multiply
135,638.76x = 187,183.74 × 75,211.96 - Step 4: Simplify right side
135,638.76x = 14,078,455,965.53 - Step 5: Solve for x
x = 14,078,455,965.53/135,638.76 - Step 6: Final answer
x = 103,793.75
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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.