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Finding the Fourth Proportional to 172,919.64, 238,620.78 and 97,467.96

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Solution

The fourth proportional to 172,919.64, 238,620.78 and 97,467.96 is: 134,501.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,919.64 : 238,620.78 = 97,467.96 : x
  2. Step 2: Convert to fraction form
    172,919.64/238,620.78 = 97,467.96/x
  3. Step 3: Cross multiply
    172,919.64x = 238,620.78 × 97,467.96
  4. Step 4: Simplify right side
    172,919.64x = 23,257,880,640.21
  5. Step 5: Solve for x
    x = 23,257,880,640.21/172,919.64
  6. Step 6: Final answer
    x = 134,501.09

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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.