Home / 187,788.38-259,148.16-102,905.64

Finding the Fourth Proportional to 187,788.38, 259,148.16 and 102,905.64

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Solution

The fourth proportional to 187,788.38, 259,148.16 and 102,905.64 is: 142,009.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,788.38 : 259,148.16 = 102,905.64 : x
  2. Step 2: Convert to fraction form
    187,788.38/259,148.16 = 102,905.64/x
  3. Step 3: Cross multiply
    187,788.38x = 259,148.16 × 102,905.64
  4. Step 4: Simplify right side
    187,788.38x = 26,667,807,259.62
  5. Step 5: Solve for x
    x = 26,667,807,259.62/187,788.38
  6. Step 6: Final answer
    x = 142,009.89

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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.