Finding the Fourth Proportional to 138,178.36, 207,267.87 and 38,343.91
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Solution
The fourth proportional to 138,178.36, 207,267.87 and 38,343.91 is: 57,515.96
Step by Step Solution
- Step 1: Write the proportion equation
138,178.36 : 207,267.87 = 38,343.91 : x - Step 2: Convert to fraction form
138,178.36/207,267.87 = 38,343.91/x - Step 3: Cross multiply
138,178.36x = 207,267.87 × 38,343.91 - Step 4: Simplify right side
138,178.36x = 7,947,460,553.17 - Step 5: Solve for x
x = 7,947,460,553.17/138,178.36 - Step 6: Final answer
x = 57,515.96
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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.