Finding the Fourth Proportional to 187,612,578.26, 258,905,382.90 and 103,986,102.06
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Solution
The fourth proportional to 187,612,578.26, 258,905,382.90 and 103,986,102.06 is: 143,500,834.64
Step by Step Solution
- Step 1: Write the proportion equation
187,612,578.26 : 258,905,382.90 = 103,986,102.06 : x - Step 2: Convert to fraction form
187,612,578.26/258,905,382.90 = 103,986,102.06/x - Step 3: Cross multiply
187,612,578.26x = 258,905,382.90 × 103,986,102.06 - Step 4: Simplify right side
187,612,578.26x = 26,922,561,570,122,780 - Step 5: Solve for x
x = 26,922,561,570,122,780/187,612,578.26 - Step 6: Final answer
x = 143,500,834.64
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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.