Finding the Fourth Proportional to 138,105.97, 190,584.35 and 77,676.59
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Solution
The fourth proportional to 138,105.97, 190,584.35 and 77,676.59 is: 107,192.63
Step by Step Solution
- Step 1: Write the proportion equation
138,105.97 : 190,584.35 = 77,676.59 : x - Step 2: Convert to fraction form
138,105.97/190,584.35 = 77,676.59/x - Step 3: Cross multiply
138,105.97x = 190,584.35 × 77,676.59 - Step 4: Simplify right side
138,105.97x = 14,803,941,941.16 - Step 5: Solve for x
x = 14,803,941,941.16/138,105.97 - Step 6: Final answer
x = 107,192.63
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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.