Finding the Fourth Proportional to 135,731.45, 187,310.53 and 75,306.06
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Solution
The fourth proportional to 135,731.45, 187,310.53 and 75,306.06 is: 103,922.99
Step by Step Solution
- Step 1: Write the proportion equation
135,731.45 : 187,310.53 = 75,306.06 : x - Step 2: Convert to fraction form
135,731.45/187,310.53 = 75,306.06/x - Step 3: Cross multiply
135,731.45x = 187,310.53 × 75,306.06 - Step 4: Simplify right side
135,731.45x = 14,105,618,010.81 - Step 5: Solve for x
x = 14,105,618,010.81/135,731.45 - Step 6: Final answer
x = 103,922.99
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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.