Finding the Fourth Proportional to 135,628.26, 187,164.81 and 74,374.26
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Solution
The fourth proportional to 135,628.26, 187,164.81 and 74,374.26 is: 102,635.28
Step by Step Solution
- Step 1: Write the proportion equation
135,628.26 : 187,164.81 = 74,374.26 : x - Step 2: Convert to fraction form
135,628.26/187,164.81 = 74,374.26/x - Step 3: Cross multiply
135,628.26x = 187,164.81 × 74,374.26 - Step 4: Simplify right side
135,628.26x = 13,920,244,241.79 - Step 5: Solve for x
x = 13,920,244,241.79/135,628.26 - Step 6: Final answer
x = 102,635.28
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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.