Finding the Fourth Proportional to 159,403.26, 219,976.48 and 87,783.12
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Solution
The fourth proportional to 159,403.26, 219,976.48 and 87,783.12 is: 121,140.70
Step by Step Solution
- Step 1: Write the proportion equation
159,403.26 : 219,976.48 = 87,783.12 : x - Step 2: Convert to fraction form
159,403.26/219,976.48 = 87,783.12/x - Step 3: Cross multiply
159,403.26x = 219,976.48 × 87,783.12 - Step 4: Simplify right side
159,403.26x = 19,310,221,741.02 - Step 5: Solve for x
x = 19,310,221,741.02/159,403.26 - Step 6: Final answer
x = 121,140.70
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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.