Finding the Fourth Proportional to 121,437,419.20, 182,156,128.80 and 121,437,419.20
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Solution
The fourth proportional to 121,437,419.20, 182,156,128.80 and 121,437,419.20 is: 182,156,128.80
Step by Step Solution
- Step 1: Write the proportion equation
121,437,419.20 : 182,156,128.80 = 121,437,419.20 : x - Step 2: Convert to fraction form
121,437,419.20/182,156,128.80 = 121,437,419.20/x - Step 3: Cross multiply
121,437,419.20x = 182,156,128.80 × 121,437,419.20 - Step 4: Simplify right side
121,437,419.20x = 22,120,570,172,934,796 - Step 5: Solve for x
x = 22,120,570,172,934,796/121,437,419.20 - Step 6: Final answer
x = 182,156,128.80
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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.