Finding the Fourth Proportional to 187,647.13, 258,983.27 and 107,078.05
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Solution
The fourth proportional to 187,647.13, 258,983.27 and 107,078.05 is: 147,784.96
Step by Step Solution
- Step 1: Write the proportion equation
187,647.13 : 258,983.27 = 107,078.05 : x - Step 2: Convert to fraction form
187,647.13/258,983.27 = 107,078.05/x - Step 3: Cross multiply
187,647.13x = 258,983.27 × 107,078.05 - Step 4: Simplify right side
187,647.13x = 27,731,423,534.22 - Step 5: Solve for x
x = 27,731,423,534.22/187,647.13 - Step 6: Final answer
x = 147,784.96
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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.