Finding the Fourth Proportional to 139,739,193.50, 192,840,876.99 and 81,036,712.71
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Solution
The fourth proportional to 139,739,193.50, 192,840,876.99 and 81,036,712.71 is: 111,831,121.65
Step by Step Solution
- Step 1: Write the proportion equation
139,739,193.50 : 192,840,876.99 = 81,036,712.71 : x - Step 2: Convert to fraction form
139,739,193.50/192,840,876.99 = 81,036,712.71/x - Step 3: Cross multiply
139,739,193.50x = 192,840,876.99 × 81,036,712.71 - Step 4: Simplify right side
139,739,193.50x = 15,627,190,747,383,080 - Step 5: Solve for x
x = 15,627,190,747,383,080/139,739,193.50 - Step 6: Final answer
x = 111,831,121.65
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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.