Finding the Fourth Proportional to 134,720.14, 185,905.20 and 74,291.17
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Solution
The fourth proportional to 134,720.14, 185,905.20 and 74,291.17 is: 102,517.08
Step by Step Solution
- Step 1: Write the proportion equation
134,720.14 : 185,905.20 = 74,291.17 : x - Step 2: Convert to fraction form
134,720.14/185,905.20 = 74,291.17/x - Step 3: Cross multiply
134,720.14x = 185,905.20 × 74,291.17 - Step 4: Simplify right side
134,720.14x = 13,811,114,817.08 - Step 5: Solve for x
x = 13,811,114,817.08/134,720.14 - Step 6: Final answer
x = 102,517.08
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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.