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Finding the Fourth Proportional to 172,909.66, 238,610.56 and 96,431.08

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Solution

The fourth proportional to 172,909.66, 238,610.56 and 96,431.08 is: 133,072.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,909.66 : 238,610.56 = 96,431.08 : x
  2. Step 2: Convert to fraction form
    172,909.66/238,610.56 = 96,431.08/x
  3. Step 3: Cross multiply
    172,909.66x = 238,610.56 × 96,431.08
  4. Step 4: Simplify right side
    172,909.66x = 23,009,474,000.20
  5. Step 5: Solve for x
    x = 23,009,474,000.20/172,909.66
  6. Step 6: Final answer
    x = 133,072.23

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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.