Finding the Fourth Proportional to 100,647.98, 138,897.36 and 55,329.46
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Solution
The fourth proportional to 100,647.98, 138,897.36 and 55,329.46 is: 76,356.39
Step by Step Solution
- Step 1: Write the proportion equation
100,647.98 : 138,897.36 = 55,329.46 : x - Step 2: Convert to fraction form
100,647.98/138,897.36 = 55,329.46/x - Step 3: Cross multiply
100,647.98x = 138,897.36 × 55,329.46 - Step 4: Simplify right side
100,647.98x = 7,685,115,924.23 - Step 5: Solve for x
x = 7,685,115,924.23/100,647.98 - Step 6: Final answer
x = 76,356.39
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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.