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Finding the Fourth Proportional to 172,942.94, 238,624.80 and 104,995.64

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Solution

The fourth proportional to 172,942.94, 238,624.80 and 104,995.64 is: 144,871.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,942.94 : 238,624.80 = 104,995.64 : x
  2. Step 2: Convert to fraction form
    172,942.94/238,624.80 = 104,995.64/x
  3. Step 3: Cross multiply
    172,942.94x = 238,624.80 × 104,995.64
  4. Step 4: Simplify right side
    172,942.94x = 25,054,563,595.87
  5. Step 5: Solve for x
    x = 25,054,563,595.87/172,942.94
  6. Step 6: Final answer
    x = 144,871.85

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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.