Finding the Fourth Proportional to 103,686,648.20, 155,529,972.30 and 87,058,449.80
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Solution
The fourth proportional to 103,686,648.20, 155,529,972.30 and 87,058,449.80 is: 130,587,674.70
Step by Step Solution
- Step 1: Write the proportion equation
103,686,648.20 : 155,529,972.30 = 87,058,449.80 : x - Step 2: Convert to fraction form
103,686,648.20/155,529,972.30 = 87,058,449.80/x - Step 3: Cross multiply
103,686,648.20x = 155,529,972.30 × 87,058,449.80 - Step 4: Simplify right side
103,686,648.20x = 13,540,198,285,874,942 - Step 5: Solve for x
x = 13,540,198,285,874,942/103,686,648.20 - Step 6: Final answer
x = 130,587,674.70
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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.