Finding the Fourth Proportional to 134,135,998.20, 201,203,997.30 and 128,845,207.80
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Solution
The fourth proportional to 134,135,998.20, 201,203,997.30 and 128,845,207.80 is: 193,267,811.70
Step by Step Solution
- Step 1: Write the proportion equation
134,135,998.20 : 201,203,997.30 = 128,845,207.80 : x - Step 2: Convert to fraction form
134,135,998.20/201,203,997.30 = 128,845,207.80/x - Step 3: Cross multiply
134,135,998.20x = 201,203,997.30 × 128,845,207.80 - Step 4: Simplify right side
134,135,998.20x = 25,924,170,842,309,140 - Step 5: Solve for x
x = 25,924,170,842,309,140/134,135,998.20 - Step 6: Final answer
x = 193,267,811.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.