Finding the Fourth Proportional to 138,295.92, 190,862.73 and 84,616.68
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Solution
The fourth proportional to 138,295.92, 190,862.73 and 84,616.68 is: 116,779.80
Step by Step Solution
- Step 1: Write the proportion equation
138,295.92 : 190,862.73 = 84,616.68 : x - Step 2: Convert to fraction form
138,295.92/190,862.73 = 84,616.68/x - Step 3: Cross multiply
138,295.92x = 190,862.73 × 84,616.68 - Step 4: Simplify right side
138,295.92x = 16,150,170,548.34 - Step 5: Solve for x
x = 16,150,170,548.34/138,295.92 - Step 6: Final answer
x = 116,779.80
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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.