Finding the Fourth Proportional to 138,106.26, 190,693.88 and 107,839.08
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Solution
The fourth proportional to 138,106.26, 190,693.88 and 107,839.08 is: 148,901.67
Step by Step Solution
- Step 1: Write the proportion equation
138,106.26 : 190,693.88 = 107,839.08 : x - Step 2: Convert to fraction form
138,106.26/190,693.88 = 107,839.08/x - Step 3: Cross multiply
138,106.26x = 190,693.88 × 107,839.08 - Step 4: Simplify right side
138,106.26x = 20,564,252,580.83 - Step 5: Solve for x
x = 20,564,252,580.83/138,106.26 - Step 6: Final answer
x = 148,901.67
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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.