Finding the Fourth Proportional to 138,450,684.21, 191,120,775.84 and 86,265,503.07
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Solution
The fourth proportional to 138,450,684.21, 191,120,775.84 and 86,265,503.07 is: 119,083,050.90
Step by Step Solution
- Step 1: Write the proportion equation
138,450,684.21 : 191,120,775.84 = 86,265,503.07 : x - Step 2: Convert to fraction form
138,450,684.21/191,120,775.84 = 86,265,503.07/x - Step 3: Cross multiply
138,450,684.21x = 191,120,775.84 × 86,265,503.07 - Step 4: Simplify right side
138,450,684.21x = 16,487,129,874,966,300 - Step 5: Solve for x
x = 16,487,129,874,966,300/138,450,684.21 - Step 6: Final answer
x = 119,083,050.90
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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.