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Finding the Fourth Proportional to 172,919.08, 238,687.86 and 101,322.28

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Solution

The fourth proportional to 172,919.08, 238,687.86 and 101,322.28 is: 139,859.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,919.08 : 238,687.86 = 101,322.28 : x
  2. Step 2: Convert to fraction form
    172,919.08/238,687.86 = 101,322.28/x
  3. Step 3: Cross multiply
    172,919.08x = 238,687.86 × 101,322.28
  4. Step 4: Simplify right side
    172,919.08x = 24,184,398,183.52
  5. Step 5: Solve for x
    x = 24,184,398,183.52/172,919.08
  6. Step 6: Final answer
    x = 139,859.63

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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.