Finding the Fourth Proportional to 108,165,619.78, 149,275,878.84 and 61,106,371.60
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Solution
The fourth proportional to 108,165,619.78, 149,275,878.84 and 61,106,371.60 is: 84,330,930.12
Step by Step Solution
- Step 1: Write the proportion equation
108,165,619.78 : 149,275,878.84 = 61,106,371.60 : x - Step 2: Convert to fraction form
108,165,619.78/149,275,878.84 = 61,106,371.60/x - Step 3: Cross multiply
108,165,619.78x = 149,275,878.84 × 61,106,371.60 - Step 4: Simplify right side
108,165,619.78x = 9,121,707,323,313,618 - Step 5: Solve for x
x = 9,121,707,323,313,618/108,165,619.78 - Step 6: Final answer
x = 84,330,930.12
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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.