Finding the Fourth Proportional to 128,961,395.20, 193,442,092.80 and 112,165,235.20
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Solution
The fourth proportional to 128,961,395.20, 193,442,092.80 and 112,165,235.20 is: 168,247,852.80
Step by Step Solution
- Step 1: Write the proportion equation
128,961,395.20 : 193,442,092.80 = 112,165,235.20 : x - Step 2: Convert to fraction form
128,961,395.20/193,442,092.80 = 112,165,235.20/x - Step 3: Cross multiply
128,961,395.20x = 193,442,092.80 × 112,165,235.20 - Step 4: Simplify right side
128,961,395.20x = 21,697,477,836,492,228 - Step 5: Solve for x
x = 21,697,477,836,492,228/128,961,395.20 - Step 6: Final answer
x = 168,247,852.80
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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.