Finding the Fourth Proportional to 138,277.21, 207,480.36 and 71,681.01
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Solution
The fourth proportional to 138,277.21, 207,480.36 and 71,681.01 is: 107,554.98
Step by Step Solution
- Step 1: Write the proportion equation
138,277.21 : 207,480.36 = 71,681.01 : x - Step 2: Convert to fraction form
138,277.21/207,480.36 = 71,681.01/x - Step 3: Cross multiply
138,277.21x = 207,480.36 × 71,681.01 - Step 4: Simplify right side
138,277.21x = 14,872,401,759.96 - Step 5: Solve for x
x = 14,872,401,759.96/138,277.21 - Step 6: Final answer
x = 107,554.98
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.