Finding the Fourth Proportional to 138,425,411.10, 207,638,116.65 and 131,706,947.10
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Solution
The fourth proportional to 138,425,411.10, 207,638,116.65 and 131,706,947.10 is: 197,560,420.65
Step by Step Solution
- Step 1: Write the proportion equation
138,425,411.10 : 207,638,116.65 = 131,706,947.10 : x - Step 2: Convert to fraction form
138,425,411.10/207,638,116.65 = 131,706,947.10/x - Step 3: Cross multiply
138,425,411.10x = 207,638,116.65 × 131,706,947.10 - Step 4: Simplify right side
138,425,411.10x = 27,347,382,445,565,180 - Step 5: Solve for x
x = 27,347,382,445,565,180/138,425,411.10 - Step 6: Final answer
x = 197,560,420.65
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Similar ratio
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.