Finding the Fourth Proportional to 135,539.97, 187,036.70 and 75,107.09
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Solution
The fourth proportional to 135,539.97, 187,036.70 and 75,107.09 is: 103,643.09
Step by Step Solution
- Step 1: Write the proportion equation
135,539.97 : 187,036.70 = 75,107.09 : x - Step 2: Convert to fraction form
135,539.97/187,036.70 = 75,107.09/x - Step 3: Cross multiply
135,539.97x = 187,036.70 × 75,107.09 - Step 4: Simplify right side
135,539.97x = 14,047,780,949.48 - Step 5: Solve for x
x = 14,047,780,949.48/135,539.97 - Step 6: Final answer
x = 103,643.09
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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.