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Finding the Fourth Proportional to 172,883.11, 238,672.83 and 119,455.78

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Solution

The fourth proportional to 172,883.11, 238,672.83 and 119,455.78 is: 164,914.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,883.11 : 238,672.83 = 119,455.78 : x
  2. Step 2: Convert to fraction form
    172,883.11/238,672.83 = 119,455.78/x
  3. Step 3: Cross multiply
    172,883.11x = 238,672.83 × 119,455.78
  4. Step 4: Simplify right side
    172,883.11x = 28,510,849,072.46
  5. Step 5: Solve for x
    x = 28,510,849,072.46/172,883.11
  6. Step 6: Final answer
    x = 164,914.02

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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.