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Finding the Fourth Proportional to 188,178.40, 259,676.52 and 111,700.72

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Solution

The fourth proportional to 188,178.40, 259,676.52 and 111,700.72 is: 154,141.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,178.40 : 259,676.52 = 111,700.72 : x
  2. Step 2: Convert to fraction form
    188,178.40/259,676.52 = 111,700.72/x
  3. Step 3: Cross multiply
    188,178.40x = 259,676.52 × 111,700.72
  4. Step 4: Simplify right side
    188,178.40x = 29,006,054,251.09
  5. Step 5: Solve for x
    x = 29,006,054,251.09/188,178.40
  6. Step 6: Final answer
    x = 154,141.25

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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.