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Finding the Fourth Proportional to 172,736, 238,435.34 and 101,139.04

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Solution

The fourth proportional to 172,736, 238,435.34 and 101,139.04 is: 139,606.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,736 : 238,435.34 = 101,139.04 : x
  2. Step 2: Convert to fraction form
    172,736/238,435.34 = 101,139.04/x
  3. Step 3: Cross multiply
    172,736x = 238,435.34 × 101,139.04
  4. Step 4: Simplify right side
    172,736x = 24,115,121,389.67
  5. Step 5: Solve for x
    x = 24,115,121,389.67/172,736
  6. Step 6: Final answer
    x = 139,606.81

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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.