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Finding the Fourth Proportional to 172,939.21, 238,709.28 and 101,342.29

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Solution

The fourth proportional to 172,939.21, 238,709.28 and 101,342.29 is: 139,883.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,939.21 : 238,709.28 = 101,342.29 : x
  2. Step 2: Convert to fraction form
    172,939.21/238,709.28 = 101,342.29/x
  3. Step 3: Cross multiply
    172,939.21x = 238,709.28 × 101,342.29
  4. Step 4: Simplify right side
    172,939.21x = 24,191,345,079.45
  5. Step 5: Solve for x
    x = 24,191,345,079.45/172,939.21
  6. Step 6: Final answer
    x = 139,883.52

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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.