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Finding the Fourth Proportional to 210,857.52, 290,954.64 and 125,956.56

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Solution

The fourth proportional to 210,857.52, 290,954.64 and 125,956.56 is: 173,802.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,857.52 : 290,954.64 = 125,956.56 : x
  2. Step 2: Convert to fraction form
    210,857.52/290,954.64 = 125,956.56/x
  3. Step 3: Cross multiply
    210,857.52x = 290,954.64 × 125,956.56
  4. Step 4: Simplify right side
    210,857.52x = 36,647,645,570.44
  5. Step 5: Solve for x
    x = 36,647,645,570.44/210,857.52
  6. Step 6: Final answer
    x = 173,802.89

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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.