Finding the Fourth Proportional to 159,644,645.20, 239,466,967.80 and 121,380,893.20
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Solution
The fourth proportional to 159,644,645.20, 239,466,967.80 and 121,380,893.20 is: 182,071,339.80
Step by Step Solution
- Step 1: Write the proportion equation
159,644,645.20 : 239,466,967.80 = 121,380,893.20 : x - Step 2: Convert to fraction form
159,644,645.20/239,466,967.80 = 121,380,893.20/x - Step 3: Cross multiply
159,644,645.20x = 239,466,967.80 × 121,380,893.20 - Step 4: Simplify right side
159,644,645.20x = 29,066,714,443,459,640 - Step 5: Solve for x
x = 29,066,714,443,459,640/159,644,645.20 - Step 6: Final answer
x = 182,071,339.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.