Finding the Fourth Proportional to 159,055.62, 219,497.01 and 87,436.09
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Solution
The fourth proportional to 159,055.62, 219,497.01 and 87,436.09 is: 120,661.94
Step by Step Solution
- Step 1: Write the proportion equation
159,055.62 : 219,497.01 = 87,436.09 : x - Step 2: Convert to fraction form
159,055.62/219,497.01 = 87,436.09/x - Step 3: Cross multiply
159,055.62x = 219,497.01 × 87,436.09 - Step 4: Simplify right side
159,055.62x = 19,191,960,321.09 - Step 5: Solve for x
x = 19,191,960,321.09/159,055.62 - Step 6: Final answer
x = 120,661.94
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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.