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Finding the Fourth Proportional to 172,059.46, 257,988.75 and 66,755.41

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Solution

The fourth proportional to 172,059.46, 257,988.75 and 66,755.41 is: 100,094.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,059.46 : 257,988.75 = 66,755.41 : x
  2. Step 2: Convert to fraction form
    172,059.46/257,988.75 = 66,755.41/x
  3. Step 3: Cross multiply
    172,059.46x = 257,988.75 × 66,755.41
  4. Step 4: Simplify right side
    172,059.46x = 17,222,144,781.64
  5. Step 5: Solve for x
    x = 17,222,144,781.64/172,059.46
  6. Step 6: Final answer
    x = 100,094.15

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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.