Finding the Fourth Proportional to 199,867.86, 275,687.49 and 128,134.26
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Solution
The fourth proportional to 199,867.86, 275,687.49 and 128,134.26 is: 176,741.84
Step by Step Solution
- Step 1: Write the proportion equation
199,867.86 : 275,687.49 = 128,134.26 : x - Step 2: Convert to fraction form
199,867.86/275,687.49 = 128,134.26/x - Step 3: Cross multiply
199,867.86x = 275,687.49 × 128,134.26 - Step 4: Simplify right side
199,867.86x = 35,325,012,522.41 - Step 5: Solve for x
x = 35,325,012,522.41/199,867.86 - Step 6: Final answer
x = 176,741.84
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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.