Finding the Fourth Proportional to 193,140.64, 289,630.77 and 74,743.75
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Solution
The fourth proportional to 193,140.64, 289,630.77 and 74,743.75 is: 112,084.59
Step by Step Solution
- Step 1: Write the proportion equation
193,140.64 : 289,630.77 = 74,743.75 : x - Step 2: Convert to fraction form
193,140.64/289,630.77 = 74,743.75/x - Step 3: Cross multiply
193,140.64x = 289,630.77 × 74,743.75 - Step 4: Simplify right side
193,140.64x = 21,648,089,865.19 - Step 5: Solve for x
x = 21,648,089,865.19/193,140.64 - Step 6: Final answer
x = 112,084.59
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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.