Finding the Fourth Proportional to 83,620,138.20, 125,430,207.30 and 66,401,449.80
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Solution
The fourth proportional to 83,620,138.20, 125,430,207.30 and 66,401,449.80 is: 99,602,174.70
Step by Step Solution
- Step 1: Write the proportion equation
83,620,138.20 : 125,430,207.30 = 66,401,449.80 : x - Step 2: Convert to fraction form
83,620,138.20/125,430,207.30 = 66,401,449.80/x - Step 3: Cross multiply
83,620,138.20x = 125,430,207.30 × 66,401,449.80 - Step 4: Simplify right side
83,620,138.20x = 8,328,747,613,434,543 - Step 5: Solve for x
x = 8,328,747,613,434,543/83,620,138.20 - Step 6: Final answer
x = 99,602,174.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.