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Finding the Fourth Proportional to 113,917.78, 157,206.99 and 63,616.78

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Solution

The fourth proportional to 113,917.78, 157,206.99 and 63,616.78 is: 87,791.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,917.78 : 157,206.99 = 63,616.78 : x
  2. Step 2: Convert to fraction form
    113,917.78/157,206.99 = 63,616.78/x
  3. Step 3: Cross multiply
    113,917.78x = 157,206.99 × 63,616.78
  4. Step 4: Simplify right side
    113,917.78x = 10,001,002,497.29
  5. Step 5: Solve for x
    x = 10,001,002,497.29/113,917.78
  6. Step 6: Final answer
    x = 87,791.41

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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.