Finding the Fourth Proportional to 84,121,201.20, 117,939,742.80 and 84,121,201.20
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Solution
The fourth proportional to 84,121,201.20, 117,939,742.80 and 84,121,201.20 is: 117,939,742.80
Step by Step Solution
- Step 1: Write the proportion equation
84,121,201.20 : 117,939,742.80 = 84,121,201.20 : x - Step 2: Convert to fraction form
84,121,201.20/117,939,742.80 = 84,121,201.20/x - Step 3: Cross multiply
84,121,201.20x = 117,939,742.80 × 84,121,201.20 - Step 4: Simplify right side
84,121,201.20x = 9,921,232,833,555,052 - Step 5: Solve for x
x = 9,921,232,833,555,052/84,121,201.20 - Step 6: Final answer
x = 117,939,742.80
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Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.