Finding the Fourth Proportional to 187,431.60, 258,660.18 and 106,866.75
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Solution
The fourth proportional to 187,431.60, 258,660.18 and 106,866.75 is: 147,478.72
Step by Step Solution
- Step 1: Write the proportion equation
187,431.60 : 258,660.18 = 106,866.75 : x - Step 2: Convert to fraction form
187,431.60/258,660.18 = 106,866.75/x - Step 3: Cross multiply
187,431.60x = 258,660.18 × 106,866.75 - Step 4: Simplify right side
187,431.60x = 27,642,172,791.02 - Step 5: Solve for x
x = 27,642,172,791.02/187,431.60 - Step 6: Final answer
x = 147,478.72
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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.