Finding the Fourth Proportional to 138,416.80, 207,187.80 and 108,673.60
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Solution
The fourth proportional to 138,416.80, 207,187.80 and 108,673.60 is: 162,666.99
Step by Step Solution
- Step 1: Write the proportion equation
138,416.80 : 207,187.80 = 108,673.60 : x - Step 2: Convert to fraction form
138,416.80/207,187.80 = 108,673.60/x - Step 3: Cross multiply
138,416.80x = 207,187.80 × 108,673.60 - Step 4: Simplify right side
138,416.80x = 22,515,844,102.08 - Step 5: Solve for x
x = 22,515,844,102.08/138,416.80 - Step 6: Final answer
x = 162,666.99
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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.