Finding the Fourth Proportional to 128,948,107.70, 193,422,161.55 and 117,043,829.30
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Solution
The fourth proportional to 128,948,107.70, 193,422,161.55 and 117,043,829.30 is: 175,565,743.95
Step by Step Solution
- Step 1: Write the proportion equation
128,948,107.70 : 193,422,161.55 = 117,043,829.30 : x - Step 2: Convert to fraction form
128,948,107.70/193,422,161.55 = 117,043,829.30/x - Step 3: Cross multiply
128,948,107.70x = 193,422,161.55 × 117,043,829.30 - Step 4: Simplify right side
128,948,107.70x = 22,638,870,459,295,224 - Step 5: Solve for x
x = 22,638,870,459,295,224/128,948,107.70 - Step 6: Final answer
x = 175,565,743.95
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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.