Finding the Fourth Proportional to 138,219,105.36, 190,741,109.67 and 75,495,190.28
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Solution
The fourth proportional to 138,219,105.36, 190,741,109.67 and 75,495,190.28 is: 104,182,676.70
Step by Step Solution
- Step 1: Write the proportion equation
138,219,105.36 : 190,741,109.67 = 75,495,190.28 : x - Step 2: Convert to fraction form
138,219,105.36/190,741,109.67 = 75,495,190.28/x - Step 3: Cross multiply
138,219,105.36x = 190,741,109.67 × 75,495,190.28 - Step 4: Simplify right side
138,219,105.36x = 14,400,036,367,801,292 - Step 5: Solve for x
x = 14,400,036,367,801,292/138,219,105.36 - Step 6: Final answer
x = 104,182,676.70
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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.