Finding the Fourth Proportional to 159,394.08, 219,965.26 and 87,774.38
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Solution
The fourth proportional to 159,394.08, 219,965.26 and 87,774.38 is: 121,129.43
Step by Step Solution
- Step 1: Write the proportion equation
159,394.08 : 219,965.26 = 87,774.38 : x - Step 2: Convert to fraction form
159,394.08/219,965.26 = 87,774.38/x - Step 3: Cross multiply
159,394.08x = 219,965.26 × 87,774.38 - Step 4: Simplify right side
159,394.08x = 19,307,314,318.04 - Step 5: Solve for x
x = 19,307,314,318.04/159,394.08 - Step 6: Final answer
x = 121,129.43
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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.