Finding the Fourth Proportional to 160,394,921.12, 221,345,154.96 and 87,056,078.24
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Solution
The fourth proportional to 160,394,921.12, 221,345,154.96 and 87,056,078.24 is: 120,137,476.88
Step by Step Solution
- Step 1: Write the proportion equation
160,394,921.12 : 221,345,154.96 = 87,056,078.24 : x - Step 2: Convert to fraction form
160,394,921.12/221,345,154.96 = 87,056,078.24/x - Step 3: Cross multiply
160,394,921.12x = 221,345,154.96 × 87,056,078.24 - Step 4: Simplify right side
160,394,921.12x = 19,269,441,128,242,684 - Step 5: Solve for x
x = 19,269,441,128,242,684/160,394,921.12 - Step 6: Final answer
x = 120,137,476.88
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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.