Finding the Fourth Proportional to 159,342.15, 219,893.63 and 87,723.75
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Solution
The fourth proportional to 159,342.15, 219,893.63 and 87,723.75 is: 121,059.58
Step by Step Solution
- Step 1: Write the proportion equation
159,342.15 : 219,893.63 = 87,723.75 : x - Step 2: Convert to fraction form
159,342.15/219,893.63 = 87,723.75/x - Step 3: Cross multiply
159,342.15x = 219,893.63 × 87,723.75 - Step 4: Simplify right side
159,342.15x = 19,289,893,386.09 - Step 5: Solve for x
x = 19,289,893,386.09/159,342.15 - Step 6: Final answer
x = 121,059.58
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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.