Finding the Fourth Proportional to 138,039.10, 207,065.34 and 38,197.09
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Solution
The fourth proportional to 138,039.10, 207,065.34 and 38,197.09 is: 57,297.49
Step by Step Solution
- Step 1: Write the proportion equation
138,039.10 : 207,065.34 = 38,197.09 : x - Step 2: Convert to fraction form
138,039.10/207,065.34 = 38,197.09/x - Step 3: Cross multiply
138,039.10x = 207,065.34 × 38,197.09 - Step 4: Simplify right side
138,039.10x = 7,909,293,427.86 - Step 5: Solve for x
x = 7,909,293,427.86/138,039.10 - Step 6: Final answer
x = 57,297.49
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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.