Finding the Fourth Proportional to 189,394,806.08, 261,336,809.76 and 115,016,686.40
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Solution
The fourth proportional to 189,394,806.08, 261,336,809.76 and 115,016,686.40 is: 158,706,009.50
Step by Step Solution
- Step 1: Write the proportion equation
189,394,806.08 : 261,336,809.76 = 115,016,686.40 : x - Step 2: Convert to fraction form
189,394,806.08/261,336,809.76 = 115,016,686.40/x - Step 3: Cross multiply
189,394,806.08x = 261,336,809.76 × 115,016,686.40 - Step 4: Simplify right side
189,394,806.08x = 30,058,093,892,942,380 - Step 5: Solve for x
x = 30,058,093,892,942,380/189,394,806.08 - Step 6: Final answer
x = 158,706,009.50
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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.