Finding the Fourth Proportional to 137,883.12, 190,273.68 and 84,257.88
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Solution
The fourth proportional to 137,883.12, 190,273.68 and 84,257.88 is: 116,272.80
Step by Step Solution
- Step 1: Write the proportion equation
137,883.12 : 190,273.68 = 84,257.88 : x - Step 2: Convert to fraction form
137,883.12/190,273.68 = 84,257.88/x - Step 3: Cross multiply
137,883.12x = 190,273.68 × 84,257.88 - Step 4: Simplify right side
137,883.12x = 16,032,056,896.60 - Step 5: Solve for x
x = 16,032,056,896.60/137,883.12 - Step 6: Final answer
x = 116,272.80
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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.