Finding the Fourth Proportional to 172,277.10, 257,905.35 and 128,099.70
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Solution
The fourth proportional to 172,277.10, 257,905.35 and 128,099.70 is: 191,770.11
Step by Step Solution
- Step 1: Write the proportion equation
172,277.10 : 257,905.35 = 128,099.70 : x - Step 2: Convert to fraction form
172,277.10/257,905.35 = 128,099.70/x - Step 3: Cross multiply
172,277.10x = 257,905.35 × 128,099.70 - Step 4: Simplify right side
172,277.10x = 33,037,597,963.40 - Step 5: Solve for x
x = 33,037,597,963.40/172,277.10 - Step 6: Final answer
x = 191,770.11
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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.