Home / 238,971.38-329,741.91-136,978.07

Finding the Fourth Proportional to 238,971.38, 329,741.91 and 136,978.07

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Solution

The fourth proportional to 238,971.38, 329,741.91 and 136,978.07 is: 189,007.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,971.38 : 329,741.91 = 136,978.07 : x
  2. Step 2: Convert to fraction form
    238,971.38/329,741.91 = 136,978.07/x
  3. Step 3: Cross multiply
    238,971.38x = 329,741.91 × 136,978.07
  4. Step 4: Simplify right side
    238,971.38x = 45,167,408,850.94
  5. Step 5: Solve for x
    x = 45,167,408,850.94/238,971.38
  6. Step 6: Final answer
    x = 189,007.61

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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.