Finding the Fourth Proportional to 159,420.09, 219,997.02 and 87,806.79
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Solution
The fourth proportional to 159,420.09, 219,997.02 and 87,806.79 is: 121,171.88
Step by Step Solution
- Step 1: Write the proportion equation
159,420.09 : 219,997.02 = 87,806.79 : x - Step 2: Convert to fraction form
159,420.09/219,997.02 = 87,806.79/x - Step 3: Cross multiply
159,420.09x = 219,997.02 × 87,806.79 - Step 4: Simplify right side
159,420.09x = 19,317,232,135.77 - Step 5: Solve for x
x = 19,317,232,135.77/159,420.09 - Step 6: Final answer
x = 121,171.88
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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.