Finding the Fourth Proportional to 138,256.90, 190,808.92 and 84,577.67
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Solution
The fourth proportional to 138,256.90, 190,808.92 and 84,577.67 is: 116,725.99
Step by Step Solution
- Step 1: Write the proportion equation
138,256.90 : 190,808.92 = 84,577.67 : x - Step 2: Convert to fraction form
138,256.90/190,808.92 = 84,577.67/x - Step 3: Cross multiply
138,256.90x = 190,808.92 × 84,577.67 - Step 4: Simplify right side
138,256.90x = 16,138,173,260.28 - Step 5: Solve for x
x = 16,138,173,260.28/138,256.90 - Step 6: Final answer
x = 116,725.99
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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.