Finding the Fourth Proportional to 159,139.68, 219,608.36 and 87,519.68
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Solution
The fourth proportional to 159,139.68, 219,608.36 and 87,519.68 is: 120,774.74
Step by Step Solution
- Step 1: Write the proportion equation
159,139.68 : 219,608.36 = 87,519.68 : x - Step 2: Convert to fraction form
159,139.68/219,608.36 = 87,519.68/x - Step 3: Cross multiply
159,139.68x = 219,608.36 × 87,519.68 - Step 4: Simplify right side
159,139.68x = 19,220,053,392.52 - Step 5: Solve for x
x = 19,220,053,392.52/159,139.68 - Step 6: Final answer
x = 120,774.74
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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.