Finding the Fourth Proportional to 148,445.13, 204,867.23 and 81,390.09
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Solution
The fourth proportional to 148,445.13, 204,867.23 and 81,390.09 is: 112,325.42
Step by Step Solution
- Step 1: Write the proportion equation
148,445.13 : 204,867.23 = 81,390.09 : x - Step 2: Convert to fraction form
148,445.13/204,867.23 = 81,390.09/x - Step 3: Cross multiply
148,445.13x = 204,867.23 × 81,390.09 - Step 4: Simplify right side
148,445.13x = 16,674,162,287.75 - Step 5: Solve for x
x = 16,674,162,287.75/148,445.13 - Step 6: Final answer
x = 112,325.42
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.