Finding the Fourth Proportional to 159,387.36, 219,880.68 and 102,816.96
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Solution
The fourth proportional to 159,387.36, 219,880.68 and 102,816.96 is: 141,839.75
Step by Step Solution
- Step 1: Write the proportion equation
159,387.36 : 219,880.68 = 102,816.96 : x - Step 2: Convert to fraction form
159,387.36/219,880.68 = 102,816.96/x - Step 3: Cross multiply
159,387.36x = 219,880.68 × 102,816.96 - Step 4: Simplify right side
159,387.36x = 22,607,463,080.33 - Step 5: Solve for x
x = 22,607,463,080.33/159,387.36 - Step 6: Final answer
x = 141,839.75
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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.