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Finding the Fourth Proportional to 171,288, 236,481.12 and 111,775.68

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Solution

The fourth proportional to 171,288, 236,481.12 and 111,775.68 is: 154,318.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,288 : 236,481.12 = 111,775.68 : x
  2. Step 2: Convert to fraction form
    171,288/236,481.12 = 111,775.68/x
  3. Step 3: Cross multiply
    171,288x = 236,481.12 × 111,775.68
  4. Step 4: Simplify right side
    171,288x = 26,432,837,995.16
  5. Step 5: Solve for x
    x = 26,432,837,995.16/171,288
  6. Step 6: Final answer
    x = 154,318.10

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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.