Finding the Fourth Proportional to 159,299.67, 219,833.61 and 87,679.18
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Solution
The fourth proportional to 159,299.67, 219,833.61 and 87,679.18 is: 120,997.31
Step by Step Solution
- Step 1: Write the proportion equation
159,299.67 : 219,833.61 = 87,679.18 : x - Step 2: Convert to fraction form
159,299.67/219,833.61 = 87,679.18/x - Step 3: Cross multiply
159,299.67x = 219,833.61 × 87,679.18 - Step 4: Simplify right side
159,299.67x = 19,274,830,661.24 - Step 5: Solve for x
x = 19,274,830,661.24/159,299.67 - Step 6: Final answer
x = 120,997.31
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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.