Finding the Fourth Proportional to 128,756,775.60, 193,135,163.40 and 114,648,001.20
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Solution
The fourth proportional to 128,756,775.60, 193,135,163.40 and 114,648,001.20 is: 171,972,001.80
Step by Step Solution
- Step 1: Write the proportion equation
128,756,775.60 : 193,135,163.40 = 114,648,001.20 : x - Step 2: Convert to fraction form
128,756,775.60/193,135,163.40 = 114,648,001.20/x - Step 3: Cross multiply
128,756,775.60x = 193,135,163.40 × 114,648,001.20 - Step 4: Simplify right side
128,756,775.60x = 22,142,560,445,245,396 - Step 5: Solve for x
x = 22,142,560,445,245,396/128,756,775.60 - Step 6: Final answer
x = 171,972,001.80
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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.