Finding the Fourth Proportional to 131,079.11, 180,904.52 and 74,498.99
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Solution
The fourth proportional to 131,079.11, 180,904.52 and 74,498.99 is: 102,817.33
Step by Step Solution
- Step 1: Write the proportion equation
131,079.11 : 180,904.52 = 74,498.99 : x - Step 2: Convert to fraction form
131,079.11/180,904.52 = 74,498.99/x - Step 3: Cross multiply
131,079.11x = 180,904.52 × 74,498.99 - Step 4: Simplify right side
131,079.11x = 13,477,203,308.16 - Step 5: Solve for x
x = 13,477,203,308.16/131,079.11 - Step 6: Final answer
x = 102,817.33
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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.