Finding the Fourth Proportional to 145,907.75, 201,352.74 and 78,839.75
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Solution
The fourth proportional to 145,907.75, 201,352.74 and 78,839.75 is: 108,798.88
Step by Step Solution
- Step 1: Write the proportion equation
145,907.75 : 201,352.74 = 78,839.75 : x - Step 2: Convert to fraction form
145,907.75/201,352.74 = 78,839.75/x - Step 3: Cross multiply
145,907.75x = 201,352.74 × 78,839.75 - Step 4: Simplify right side
145,907.75x = 15,874,599,683.42 - Step 5: Solve for x
x = 15,874,599,683.42/145,907.75 - Step 6: Final answer
x = 108,798.88
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1.5x scale
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.