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Finding the Fourth Proportional to 172,321.44, 237,815.64 and 100,709.34

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Solution

The fourth proportional to 172,321.44, 237,815.64 and 100,709.34 is: 138,985.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,321.44 : 237,815.64 = 100,709.34 : x
  2. Step 2: Convert to fraction form
    172,321.44/237,815.64 = 100,709.34/x
  3. Step 3: Cross multiply
    172,321.44x = 237,815.64 × 100,709.34
  4. Step 4: Simplify right side
    172,321.44x = 23,950,256,146.08
  5. Step 5: Solve for x
    x = 23,950,256,146.08/172,321.44
  6. Step 6: Final answer
    x = 138,985.93

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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.