Finding the Fourth Proportional to 138,379,062.08, 190,967,091.58 and 76,503,386.44
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Solution
The fourth proportional to 138,379,062.08, 190,967,091.58 and 76,503,386.44 is: 105,576,876.91
Step by Step Solution
- Step 1: Write the proportion equation
138,379,062.08 : 190,967,091.58 = 76,503,386.44 : x - Step 2: Convert to fraction form
138,379,062.08/190,967,091.58 = 76,503,386.44/x - Step 3: Cross multiply
138,379,062.08x = 190,967,091.58 × 76,503,386.44 - Step 4: Simplify right side
138,379,062.08x = 14,609,629,204,467,610 - Step 5: Solve for x
x = 14,609,629,204,467,610/138,379,062.08 - Step 6: Final answer
x = 105,576,876.91
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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.