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Finding the Fourth Proportional to 172,743.91, 238,305.11 and 101,079.56

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Solution

The fourth proportional to 172,743.91, 238,305.11 and 101,079.56 is: 139,442.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,743.91 : 238,305.11 = 101,079.56 : x
  2. Step 2: Convert to fraction form
    172,743.91/238,305.11 = 101,079.56/x
  3. Step 3: Cross multiply
    172,743.91x = 238,305.11 × 101,079.56
  4. Step 4: Simplify right side
    172,743.91x = 24,087,775,754.92
  5. Step 5: Solve for x
    x = 24,087,775,754.92/172,743.91
  6. Step 6: Final answer
    x = 139,442.11

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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.