Finding the Fourth Proportional to 138,370.20, 207,555.30 and 125,904.30
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Solution
The fourth proportional to 138,370.20, 207,555.30 and 125,904.30 is: 188,856.45
Step by Step Solution
- Step 1: Write the proportion equation
138,370.20 : 207,555.30 = 125,904.30 : x - Step 2: Convert to fraction form
138,370.20/207,555.30 = 125,904.30/x - Step 3: Cross multiply
138,370.20x = 207,555.30 × 125,904.30 - Step 4: Simplify right side
138,370.20x = 26,132,104,757.79 - Step 5: Solve for x
x = 26,132,104,757.79/138,370.20 - Step 6: Final answer
x = 188,856.45
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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.