Finding the Fourth Proportional to 115,944,619.20, 159,936,751.68 and 72,408,972.48
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Solution
The fourth proportional to 115,944,619.20, 159,936,751.68 and 72,408,972.48 is: 99,882,650.28
Step by Step Solution
- Step 1: Write the proportion equation
115,944,619.20 : 159,936,751.68 = 72,408,972.48 : x - Step 2: Convert to fraction form
115,944,619.20/159,936,751.68 = 72,408,972.48/x - Step 3: Cross multiply
115,944,619.20x = 159,936,751.68 × 72,408,972.48 - Step 4: Simplify right side
115,944,619.20x = 11,580,855,850,937,714 - Step 5: Solve for x
x = 11,580,855,850,937,714/115,944,619.20 - Step 6: Final answer
x = 99,882,650.28
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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.