Finding the Fourth Proportional to 142,753,336.12, 196,998,918.42 and 80,873,528.68
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Solution
The fourth proportional to 142,753,336.12, 196,998,918.42 and 80,873,528.68 is: 111,605,081.27
Step by Step Solution
- Step 1: Write the proportion equation
142,753,336.12 : 196,998,918.42 = 80,873,528.68 : x - Step 2: Convert to fraction form
142,753,336.12/196,998,918.42 = 80,873,528.68/x - Step 3: Cross multiply
142,753,336.12x = 196,998,918.42 × 80,873,528.68 - Step 4: Simplify right side
142,753,336.12x = 15,931,997,678,768,850 - Step 5: Solve for x
x = 15,931,997,678,768,850/142,753,336.12 - Step 6: Final answer
x = 111,605,081.27
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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.