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Finding the Fourth Proportional to 172,348.20, 258,546.60 and 54,007.20

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Solution

The fourth proportional to 172,348.20, 258,546.60 and 54,007.20 is: 81,018.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,348.20 : 258,546.60 = 54,007.20 : x
  2. Step 2: Convert to fraction form
    172,348.20/258,546.60 = 54,007.20/x
  3. Step 3: Cross multiply
    172,348.20x = 258,546.60 × 54,007.20
  4. Step 4: Simplify right side
    172,348.20x = 13,963,377,935.52
  5. Step 5: Solve for x
    x = 13,963,377,935.52/172,348.20
  6. Step 6: Final answer
    x = 81,018.41

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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.