Finding the Fourth Proportional to 107,937.20, 161,905.80 and 99,642.80
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Solution
The fourth proportional to 107,937.20, 161,905.80 and 99,642.80 is: 149,464.20
Step by Step Solution
- Step 1: Write the proportion equation
107,937.20 : 161,905.80 = 99,642.80 : x - Step 2: Convert to fraction form
107,937.20/161,905.80 = 99,642.80/x - Step 3: Cross multiply
107,937.20x = 161,905.80 × 99,642.80 - Step 4: Simplify right side
107,937.20x = 16,132,747,248.24 - Step 5: Solve for x
x = 16,132,747,248.24/107,937.20 - Step 6: Final answer
x = 149,464.20
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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.