Home / 172,939.12-238,693.08-109,236.40

Finding the Fourth Proportional to 172,939.12, 238,693.08 and 109,236.40

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Solution

The fourth proportional to 172,939.12, 238,693.08 and 109,236.40 is: 150,769.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,939.12 : 238,693.08 = 109,236.40 : x
  2. Step 2: Convert to fraction form
    172,939.12/238,693.08 = 109,236.40/x
  3. Step 3: Cross multiply
    172,939.12x = 238,693.08 × 109,236.40
  4. Step 4: Simplify right side
    172,939.12x = 26,073,972,764.11
  5. Step 5: Solve for x
    x = 26,073,972,764.11/172,939.12
  6. Step 6: Final answer
    x = 150,769.66

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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.