Finding the Fourth Proportional to 100,125.21, 138,163.41 and 59,830.95
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Solution
The fourth proportional to 100,125.21, 138,163.41 and 59,830.95 is: 82,561.11
Step by Step Solution
- Step 1: Write the proportion equation
100,125.21 : 138,163.41 = 59,830.95 : x - Step 2: Convert to fraction form
100,125.21/138,163.41 = 59,830.95/x - Step 3: Cross multiply
100,125.21x = 138,163.41 × 59,830.95 - Step 4: Simplify right side
100,125.21x = 8,266,448,075.54 - Step 5: Solve for x
x = 8,266,448,075.54/100,125.21 - Step 6: Final answer
x = 82,561.11
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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.