Finding the Fourth Proportional to 158,828.29, 219,183.36 and 86,231.26
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Solution
The fourth proportional to 158,828.29, 219,183.36 and 86,231.26 is: 118,999.32
Step by Step Solution
- Step 1: Write the proportion equation
158,828.29 : 219,183.36 = 86,231.26 : x - Step 2: Convert to fraction form
158,828.29/219,183.36 = 86,231.26/x - Step 3: Cross multiply
158,828.29x = 219,183.36 × 86,231.26 - Step 4: Simplify right side
158,828.29x = 18,900,457,901.18 - Step 5: Solve for x
x = 18,900,457,901.18/158,828.29 - Step 6: Final answer
x = 118,999.32
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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.