Finding the Fourth Proportional to 128,701.20, 193,051.80 and 44,461.20
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Solution
The fourth proportional to 128,701.20, 193,051.80 and 44,461.20 is: 66,691.80
Step by Step Solution
- Step 1: Write the proportion equation
128,701.20 : 193,051.80 = 44,461.20 : x - Step 2: Convert to fraction form
128,701.20/193,051.80 = 44,461.20/x - Step 3: Cross multiply
128,701.20x = 193,051.80 × 44,461.20 - Step 4: Simplify right side
128,701.20x = 8,583,314,690.16 - Step 5: Solve for x
x = 8,583,314,690.16/128,701.20 - Step 6: Final answer
x = 66,691.80
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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.