Finding the Fourth Proportional to 135,078.20, 186,407.07 and 74,652.33
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Solution
The fourth proportional to 135,078.20, 186,407.07 and 74,652.33 is: 103,019.75
Step by Step Solution
- Step 1: Write the proportion equation
135,078.20 : 186,407.07 = 74,652.33 : x - Step 2: Convert to fraction form
135,078.20/186,407.07 = 74,652.33/x - Step 3: Cross multiply
135,078.20x = 186,407.07 × 74,652.33 - Step 4: Simplify right side
135,078.20x = 13,915,722,103.97 - Step 5: Solve for x
x = 13,915,722,103.97/135,078.20 - Step 6: Final answer
x = 103,019.75
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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.