Finding the Fourth Proportional to 138,328.20, 207,492.30 and 125,862.30
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Solution
The fourth proportional to 138,328.20, 207,492.30 and 125,862.30 is: 188,793.45
Step by Step Solution
- Step 1: Write the proportion equation
138,328.20 : 207,492.30 = 125,862.30 : x - Step 2: Convert to fraction form
138,328.20/207,492.30 = 125,862.30/x - Step 3: Cross multiply
138,328.20x = 207,492.30 × 125,862.30 - Step 4: Simplify right side
138,328.20x = 26,115,458,110.29 - Step 5: Solve for x
x = 26,115,458,110.29/138,328.20 - Step 6: Final answer
x = 188,793.45
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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.