Finding the Fourth Proportional to 122,393,077.20, 183,589,615.80 and 115,212,718.80
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Solution
The fourth proportional to 122,393,077.20, 183,589,615.80 and 115,212,718.80 is: 172,819,078.20
Step by Step Solution
- Step 1: Write the proportion equation
122,393,077.20 : 183,589,615.80 = 115,212,718.80 : x - Step 2: Convert to fraction form
122,393,077.20/183,589,615.80 = 115,212,718.80/x - Step 3: Cross multiply
122,393,077.20x = 183,589,615.80 × 115,212,718.80 - Step 4: Simplify right side
122,393,077.20x = 21,151,858,779,765,436 - Step 5: Solve for x
x = 21,151,858,779,765,436/122,393,077.20 - Step 6: Final answer
x = 172,819,078.20
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1.5x scale
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.