Finding the Fourth Proportional to 128,947,538.70, 193,421,308.05 and 117,043,260.30
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Solution
The fourth proportional to 128,947,538.70, 193,421,308.05 and 117,043,260.30 is: 175,564,890.45
Step by Step Solution
- Step 1: Write the proportion equation
128,947,538.70 : 193,421,308.05 = 117,043,260.30 : x - Step 2: Convert to fraction form
128,947,538.70/193,421,308.05 = 117,043,260.30/x - Step 3: Cross multiply
128,947,538.70x = 193,421,308.05 × 117,043,260.30 - Step 4: Simplify right side
128,947,538.70x = 22,638,660,505,662,636 - Step 5: Solve for x
x = 22,638,660,505,662,636/128,947,538.70 - Step 6: Final answer
x = 175,564,890.45
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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.