Finding the Fourth Proportional to 129,490,083.20, 194,235,124.80 and 129,490,083.20
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Solution
The fourth proportional to 129,490,083.20, 194,235,124.80 and 129,490,083.20 is: 194,235,124.80
Step by Step Solution
- Step 1: Write the proportion equation
129,490,083.20 : 194,235,124.80 = 129,490,083.20 : x - Step 2: Convert to fraction form
129,490,083.20/194,235,124.80 = 129,490,083.20/x - Step 3: Cross multiply
129,490,083.20x = 194,235,124.80 × 129,490,083.20 - Step 4: Simplify right side
129,490,083.20x = 25,151,522,470,714,384 - Step 5: Solve for x
x = 25,151,522,470,714,384/129,490,083.20 - Step 6: Final answer
x = 194,235,124.80
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1.5x scale
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.