Finding the Fourth Proportional to 145,877.75, 201,311.30 and 78,809.75
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Solution
The fourth proportional to 145,877.75, 201,311.30 and 78,809.75 is: 108,757.46
Step by Step Solution
- Step 1: Write the proportion equation
145,877.75 : 201,311.30 = 78,809.75 : x - Step 2: Convert to fraction form
145,877.75/201,311.30 = 78,809.75/x - Step 3: Cross multiply
145,877.75x = 201,311.30 × 78,809.75 - Step 4: Simplify right side
145,877.75x = 15,865,293,225.18 - Step 5: Solve for x
x = 15,865,293,225.18/145,877.75 - Step 6: Final answer
x = 108,757.46
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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.