Finding the Fourth Proportional to 159,486.87, 220,101.84 and 87,866.91
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Solution
The fourth proportional to 159,486.87, 220,101.84 and 87,866.91 is: 121,261.82
Step by Step Solution
- Step 1: Write the proportion equation
159,486.87 : 220,101.84 = 87,866.91 : x - Step 2: Convert to fraction form
159,486.87/220,101.84 = 87,866.91/x - Step 3: Cross multiply
159,486.87x = 220,101.84 × 87,866.91 - Step 4: Simplify right side
159,486.87x = 19,339,668,566.11 - Step 5: Solve for x
x = 19,339,668,566.11/159,486.87 - Step 6: Final answer
x = 121,261.82
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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.