Finding the Fourth Proportional to 138,325.20, 207,487.80 and 125,859.30
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Solution
The fourth proportional to 138,325.20, 207,487.80 and 125,859.30 is: 188,788.95
Step by Step Solution
- Step 1: Write the proportion equation
138,325.20 : 207,487.80 = 125,859.30 : x - Step 2: Convert to fraction form
138,325.20/207,487.80 = 125,859.30/x - Step 3: Cross multiply
138,325.20x = 207,487.80 × 125,859.30 - Step 4: Simplify right side
138,325.20x = 26,114,269,266.54 - Step 5: Solve for x
x = 26,114,269,266.54/138,325.20 - Step 6: Final answer
x = 188,788.95
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1.5x scale
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.