Finding the Fourth Proportional to 145,787,910.75, 201,191,515.88 and 80,602,013.79
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Solution
The fourth proportional to 145,787,910.75, 201,191,515.88 and 80,602,013.79 is: 111,233,100.56
Step by Step Solution
- Step 1: Write the proportion equation
145,787,910.75 : 201,191,515.88 = 80,602,013.79 : x - Step 2: Convert to fraction form
145,787,910.75/201,191,515.88 = 80,602,013.79/x - Step 3: Cross multiply
145,787,910.75x = 201,191,515.88 × 80,602,013.79 - Step 4: Simplify right side
145,787,910.75x = 16,216,441,336,987,756 - Step 5: Solve for x
x = 16,216,441,336,987,756/145,787,910.75 - Step 6: Final answer
x = 111,233,100.56
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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.