Finding the Fourth Proportional to 159,349.14, 219,897.56 and 87,729.70
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Solution
The fourth proportional to 159,349.14, 219,897.56 and 87,729.70 is: 121,064.64
Step by Step Solution
- Step 1: Write the proportion equation
159,349.14 : 219,897.56 = 87,729.70 : x - Step 2: Convert to fraction form
159,349.14/219,897.56 = 87,729.70/x - Step 3: Cross multiply
159,349.14x = 219,897.56 × 87,729.70 - Step 4: Simplify right side
159,349.14x = 19,291,546,969.53 - Step 5: Solve for x
x = 19,291,546,969.53/159,349.14 - Step 6: Final answer
x = 121,064.64
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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.