Finding the Fourth Proportional to 159,090.10, 219,542.36 and 87,469.49
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Solution
The fourth proportional to 159,090.10, 219,542.36 and 87,469.49 is: 120,706.81
Step by Step Solution
- Step 1: Write the proportion equation
159,090.10 : 219,542.36 = 87,469.49 : x - Step 2: Convert to fraction form
159,090.10/219,542.36 = 87,469.49/x - Step 3: Cross multiply
159,090.10x = 219,542.36 × 87,469.49 - Step 4: Simplify right side
159,090.10x = 19,203,258,374.10 - Step 5: Solve for x
x = 19,203,258,374.10/159,090.10 - Step 6: Final answer
x = 120,706.81
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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.