Finding the Fourth Proportional to 145,833.75, 201,250.71 and 78,765.75
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Solution
The fourth proportional to 145,833.75, 201,250.71 and 78,765.75 is: 108,696.81
Step by Step Solution
- Step 1: Write the proportion equation
145,833.75 : 201,250.71 = 78,765.75 : x - Step 2: Convert to fraction form
145,833.75/201,250.71 = 78,765.75/x - Step 3: Cross multiply
145,833.75x = 201,250.71 × 78,765.75 - Step 4: Simplify right side
145,833.75x = 15,851,663,111.18 - Step 5: Solve for x
x = 15,851,663,111.18/145,833.75 - Step 6: Final answer
x = 108,696.81
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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.