Finding the Fourth Proportional to 172,028.14, 258,078.09 and 86,686.96
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Solution
The fourth proportional to 172,028.14, 258,078.09 and 86,686.96 is: 130,048.52
Step by Step Solution
- Step 1: Write the proportion equation
172,028.14 : 258,078.09 = 86,686.96 : x - Step 2: Convert to fraction form
172,028.14/258,078.09 = 86,686.96/x - Step 3: Cross multiply
172,028.14x = 258,078.09 × 86,686.96 - Step 4: Simplify right side
172,028.14x = 22,372,005,064.71 - Step 5: Solve for x
x = 22,372,005,064.71/172,028.14 - Step 6: Final answer
x = 130,048.52
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.