Finding the Fourth Proportional to 138,061.44, 189,355.68 and 136,425.60
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Solution
The fourth proportional to 138,061.44, 189,355.68 and 136,425.60 is: 187,112.07
Step by Step Solution
- Step 1: Write the proportion equation
138,061.44 : 189,355.68 = 136,425.60 : x - Step 2: Convert to fraction form
138,061.44/189,355.68 = 136,425.60/x - Step 3: Cross multiply
138,061.44x = 189,355.68 × 136,425.60 - Step 4: Simplify right side
138,061.44x = 25,832,962,257.41 - Step 5: Solve for x
x = 25,832,962,257.41/138,061.44 - Step 6: Final answer
x = 187,112.07
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.