Finding the Fourth Proportional to 215,631,972.74, 323,481,401.08 and 91,135,125.48
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Solution
The fourth proportional to 215,631,972.74, 323,481,401.08 and 91,135,125.48 is: 136,716,822.20
Step by Step Solution
- Step 1: Write the proportion equation
215,631,972.74 : 323,481,401.08 = 91,135,125.48 : x - Step 2: Convert to fraction form
215,631,972.74/323,481,401.08 = 91,135,125.48/x - Step 3: Cross multiply
215,631,972.74x = 323,481,401.08 × 91,135,125.48 - Step 4: Simplify right side
215,631,972.74x = 29,480,518,077,872,008 - Step 5: Solve for x
x = 29,480,518,077,872,008/215,631,972.74 - Step 6: Final answer
x = 136,716,822.20
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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.