Finding the Fourth Proportional to 100,898.88, 139,241.36 and 55,578.44
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Solution
The fourth proportional to 100,898.88, 139,241.36 and 55,578.44 is: 76,698.75
Step by Step Solution
- Step 1: Write the proportion equation
100,898.88 : 139,241.36 = 55,578.44 : x - Step 2: Convert to fraction form
100,898.88/139,241.36 = 55,578.44/x - Step 3: Cross multiply
100,898.88x = 139,241.36 × 55,578.44 - Step 4: Simplify right side
100,898.88x = 7,738,817,572.28 - Step 5: Solve for x
x = 7,738,817,572.28/100,898.88 - Step 6: Final answer
x = 76,698.75
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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.