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Finding the Fourth Proportional to 172,997.10, 238,730.58 and 101,424.79

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Solution

The fourth proportional to 172,997.10, 238,730.58 and 101,424.79 is: 139,963.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,997.10 : 238,730.58 = 101,424.79 : x
  2. Step 2: Convert to fraction form
    172,997.10/238,730.58 = 101,424.79/x
  3. Step 3: Cross multiply
    172,997.10x = 238,730.58 × 101,424.79
  4. Step 4: Simplify right side
    172,997.10x = 24,213,198,346.25
  5. Step 5: Solve for x
    x = 24,213,198,346.25/172,997.10
  6. Step 6: Final answer
    x = 139,963.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.