Finding the Fourth Proportional to 122,474,851.90, 183,712,277.85 and 81,660,183.10
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Solution
The fourth proportional to 122,474,851.90, 183,712,277.85 and 81,660,183.10 is: 122,490,274.65
Step by Step Solution
- Step 1: Write the proportion equation
122,474,851.90 : 183,712,277.85 = 81,660,183.10 : x - Step 2: Convert to fraction form
122,474,851.90/183,712,277.85 = 81,660,183.10/x - Step 3: Cross multiply
122,474,851.90x = 183,712,277.85 × 81,660,183.10 - Step 4: Simplify right side
122,474,851.90x = 15,001,978,246,949,072 - Step 5: Solve for x
x = 15,001,978,246,949,072/122,474,851.90 - Step 6: Final answer
x = 122,490,274.65
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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.