Finding the Fourth Proportional to 108,138.36, 149,220.27 and 60,390.68
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Solution
The fourth proportional to 108,138.36, 149,220.27 and 60,390.68 is: 83,333.17
Step by Step Solution
- Step 1: Write the proportion equation
108,138.36 : 149,220.27 = 60,390.68 : x - Step 2: Convert to fraction form
108,138.36/149,220.27 = 60,390.68/x - Step 3: Cross multiply
108,138.36x = 149,220.27 × 60,390.68 - Step 4: Simplify right side
108,138.36x = 9,011,512,828.98 - Step 5: Solve for x
x = 9,011,512,828.98/108,138.36 - Step 6: Final answer
x = 83,333.17
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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.