Finding the Fourth Proportional to 138,330,464.49, 190,984,081.91 and 86,196,091.05
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Solution
The fourth proportional to 138,330,464.49, 190,984,081.91 and 86,196,091.05 is: 119,005,465.45
Step by Step Solution
- Step 1: Write the proportion equation
138,330,464.49 : 190,984,081.91 = 86,196,091.05 : x - Step 2: Convert to fraction form
138,330,464.49/190,984,081.91 = 86,196,091.05/x - Step 3: Cross multiply
138,330,464.49x = 190,984,081.91 × 86,196,091.05 - Step 4: Simplify right side
138,330,464.49x = 16,462,081,312,984,036 - Step 5: Solve for x
x = 16,462,081,312,984,036/138,330,464.49 - Step 6: Final answer
x = 119,005,465.45
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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.