Finding the Fourth Proportional to 159,392.12, 219,962.56 and 87,774.70
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Solution
The fourth proportional to 159,392.12, 219,962.56 and 87,774.70 is: 121,129.88
Step by Step Solution
- Step 1: Write the proportion equation
159,392.12 : 219,962.56 = 87,774.70 : x - Step 2: Convert to fraction form
159,392.12/219,962.56 = 87,774.70/x - Step 3: Cross multiply
159,392.12x = 219,962.56 × 87,774.70 - Step 4: Simplify right side
159,392.12x = 19,307,147,715.23 - Step 5: Solve for x
x = 19,307,147,715.23/159,392.12 - Step 6: Final answer
x = 121,129.88
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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.