Finding the Fourth Proportional to 160,720.20, 221,806.98 and 89,122.68
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Solution
The fourth proportional to 160,720.20, 221,806.98 and 89,122.68 is: 122,996.56
Step by Step Solution
- Step 1: Write the proportion equation
160,720.20 : 221,806.98 = 89,122.68 : x - Step 2: Convert to fraction form
160,720.20/221,806.98 = 89,122.68/x - Step 3: Cross multiply
160,720.20x = 221,806.98 × 89,122.68 - Step 4: Simplify right side
160,720.20x = 19,768,032,500.31 - Step 5: Solve for x
x = 19,768,032,500.31/160,720.20 - Step 6: Final answer
x = 122,996.56
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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.