Finding the Fourth Proportional to 159,392.13, 219,961.13 and 87,771.99
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Solution
The fourth proportional to 159,392.13, 219,961.13 and 87,771.99 is: 121,125.34
Step by Step Solution
- Step 1: Write the proportion equation
159,392.13 : 219,961.13 = 87,771.99 : x - Step 2: Convert to fraction form
159,392.13/219,961.13 = 87,771.99/x - Step 3: Cross multiply
159,392.13x = 219,961.13 × 87,771.99 - Step 4: Simplify right side
159,392.13x = 19,306,426,102.75 - Step 5: Solve for x
x = 19,306,426,102.75/159,392.13 - Step 6: Final answer
x = 121,125.34
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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.