Finding the Fourth Proportional to 159,098.78, 219,556.41 and 87,483.62
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Solution
The fourth proportional to 159,098.78, 219,556.41 and 87,483.62 is: 120,727.45
Step by Step Solution
- Step 1: Write the proportion equation
159,098.78 : 219,556.41 = 87,483.62 : x - Step 2: Convert to fraction form
159,098.78/219,556.41 = 87,483.62/x - Step 3: Cross multiply
159,098.78x = 219,556.41 × 87,483.62 - Step 4: Simplify right side
159,098.78x = 19,207,589,541.00 - Step 5: Solve for x
x = 19,207,589,541.00/159,098.78 - Step 6: Final answer
x = 120,727.45
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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.