Finding the Fourth Proportional to 138,043.19, 207,069.41 and 38,195.03
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Solution
The fourth proportional to 138,043.19, 207,069.41 and 38,195.03 is: 57,293.82
Step by Step Solution
- Step 1: Write the proportion equation
138,043.19 : 207,069.41 = 38,195.03 : x - Step 2: Convert to fraction form
138,043.19/207,069.41 = 38,195.03/x - Step 3: Cross multiply
138,043.19x = 207,069.41 × 38,195.03 - Step 4: Simplify right side
138,043.19x = 7,909,021,100.71 - Step 5: Solve for x
x = 7,909,021,100.71/138,043.19 - Step 6: Final answer
x = 57,293.82
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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.