Finding the Fourth Proportional to 138,219,105.18, 190,741,109.40 and 75,495,190.08
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Solution
The fourth proportional to 138,219,105.18, 190,741,109.40 and 75,495,190.08 is: 104,182,676.42
Step by Step Solution
- Step 1: Write the proportion equation
138,219,105.18 : 190,741,109.40 = 75,495,190.08 : x - Step 2: Convert to fraction form
138,219,105.18/190,741,109.40 = 75,495,190.08/x - Step 3: Cross multiply
138,219,105.18x = 190,741,109.40 × 75,495,190.08 - Step 4: Simplify right side
138,219,105.18x = 14,400,036,310,223,074 - Step 5: Solve for x
x = 14,400,036,310,223,074/138,219,105.18 - Step 6: Final answer
x = 104,182,676.42
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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.