Finding the Fourth Proportional to 145,920.75, 201,370.64 and 78,852.75
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Solution
The fourth proportional to 145,920.75, 201,370.64 and 78,852.75 is: 108,816.80
Step by Step Solution
- Step 1: Write the proportion equation
145,920.75 : 201,370.64 = 78,852.75 : x - Step 2: Convert to fraction form
145,920.75/201,370.64 = 78,852.75/x - Step 3: Cross multiply
145,920.75x = 201,370.64 × 78,852.75 - Step 4: Simplify right side
145,920.75x = 15,878,628,339.00 - Step 5: Solve for x
x = 15,878,628,339.00/145,920.75 - Step 6: Final answer
x = 108,816.80
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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.