Finding the Fourth Proportional to 135,238.20, 186,627.08 and 74,804.08
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Solution
The fourth proportional to 135,238.20, 186,627.08 and 74,804.08 is: 103,228.73
Step by Step Solution
- Step 1: Write the proportion equation
135,238.20 : 186,627.08 = 74,804.08 : x - Step 2: Convert to fraction form
135,238.20/186,627.08 = 74,804.08/x - Step 3: Cross multiply
135,238.20x = 186,627.08 × 74,804.08 - Step 4: Simplify right side
135,238.20x = 13,960,467,022.49 - Step 5: Solve for x
x = 13,960,467,022.49/135,238.20 - Step 6: Final answer
x = 103,228.73
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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.