Finding the Fourth Proportional to 159,843,708.21, 220,584,314.67 and 86,504,850.21
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Solution
The fourth proportional to 159,843,708.21, 220,584,314.67 and 86,504,850.21 is: 119,376,691.85
Step by Step Solution
- Step 1: Write the proportion equation
159,843,708.21 : 220,584,314.67 = 86,504,850.21 : x - Step 2: Convert to fraction form
159,843,708.21/220,584,314.67 = 86,504,850.21/x - Step 3: Cross multiply
159,843,708.21x = 220,584,314.67 × 86,504,850.21 - Step 4: Simplify right side
159,843,708.21x = 19,081,613,099,203,852 - Step 5: Solve for x
x = 19,081,613,099,203,852/159,843,708.21 - Step 6: Final answer
x = 119,376,691.85
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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.