Finding the Fourth Proportional to 100,424.18, 138,459.28 and 73,519.98
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Solution
The fourth proportional to 100,424.18, 138,459.28 and 73,519.98 is: 101,365.26
Step by Step Solution
- Step 1: Write the proportion equation
100,424.18 : 138,459.28 = 73,519.98 : x - Step 2: Convert to fraction form
100,424.18/138,459.28 = 73,519.98/x - Step 3: Cross multiply
100,424.18x = 138,459.28 × 73,519.98 - Step 4: Simplify right side
100,424.18x = 10,179,523,496.41 - Step 5: Solve for x
x = 10,179,523,496.41/100,424.18 - Step 6: Final answer
x = 101,365.26
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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.