Finding the Fourth Proportional to 159,192.78, 219,679.11 and 87,568.26
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Solution
The fourth proportional to 159,192.78, 219,679.11 and 87,568.26 is: 120,840.39
Step by Step Solution
- Step 1: Write the proportion equation
159,192.78 : 219,679.11 = 87,568.26 : x - Step 2: Convert to fraction form
159,192.78/219,679.11 = 87,568.26/x - Step 3: Cross multiply
159,192.78x = 219,679.11 × 87,568.26 - Step 4: Simplify right side
159,192.78x = 19,236,917,421.05 - Step 5: Solve for x
x = 19,236,917,421.05/159,192.78 - Step 6: Final answer
x = 120,840.39
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Double scale
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Similar ratio
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1.5x scale
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.